#5583FC
Closest named color: Cornflower (#6A79F7). oklch(63.9% 0.187 265.7), rgb(85, 131, 252).
Aa
Black text reads best on this color (6.03:1).
About this color
#5583FC is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.187 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.031 away. Black text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 6.03:1 |
| White text | 3.47:1 |
Values
| HEX | #5583FC |
| RGB | rgb(85, 131, 252) |
| HSL | hsl(223, 97%, 66%) |
| OKLCH | oklch(63.9% 0.187 265.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5583FC | 3.47:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #5583FC | 6.03:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #5583FC text on white | 3.47:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #5583FC text on black | 6.03:1 | AA | Lc -39.7 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A5C0FD
oklch(81% 0.092 265.9)
-
Step 400
400
#759CFC
oklch(70.6% 0.147 266)
-
Step 500
500 (this color)
#5583FC
oklch(63.9% 0.187 265.7)
-
Step 600
600
#3966E8
oklch(55.6% 0.203 265.6)
-
Step 700
700
#2C54CA
oklch(49.2% 0.189 265.5)
-
Step 800
800
#2545A3
oklch(42.6% 0.157 265.7)
-
Step 900
900
#223C81
oklch(37.8% 0.121 265.4)
-
Step 950
950
#14244C
oklch(27.1% 0.077 265.2)
#5583FC with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4192FF | 0.038 |
| Deuteranopia (no green cones) | #1482FA | 0.042 |
| Tritanopia (no blue cones) | #009FB3 | 0.154 |
| Achromatopsia (no color) | #898989 | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5583FC
#5583FC
oklch(63.9% 0.187 265.7)
- #AF8500
#AF8500
oklch(64% 0.131 86.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5583FC, closest first.
No curated palette has a color within ΔE 0.04 of #5583FC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.031
- Soft Blue #6488EA ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.043
- Clear Blue #247AFD ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.051
- Chefchaouen Blue #4895EF ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.059
- Lavender Blue #8B88F8 ΔE 0.069
Use #5583FC in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.