#5597FD
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.1% 0.166 258.9), rgb(85, 151, 253).
Aa
Black text reads best on this color (7.23:1).
About this color
#5597FD is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.166 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.025 away. Black text reads best on it, at 7.23:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.23:1 |
| White text | 2.90:1 |
Values
| HEX | #5597FD |
| RGB | rgb(85, 151, 253) |
| HSL | hsl(216, 98%, 66%) |
| OKLCH | oklch(68.1% 0.166 258.9) |
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 #5597FD | 2.90:1 | Fails | Lc -60.4 | Content text, not long reading |
| Black text on #5597FD | 7.23:1 | AAA | Lc 49.0 | Large or bold text, headings |
| #5597FD text on white | 2.90:1 | Fails | Lc 55.1 | Large or bold text, headings |
| #5597FD text on black | 7.23:1 | AAA | Lc -46.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9BC2FF
oklch(80.8% 0.097 259.2)
-
Step 400
400 (this color)
#5597FD
oklch(68.1% 0.166 258.9)
-
Step 500
500
#3284FF
oklch(63.1% 0.199 258.9)
-
Step 600
600
#006AED
oklch(55.6% 0.214 258.9)
-
Step 700
700
#0059C9
oklch(49.2% 0.189 258.8)
-
Step 800
800
#0048A6
oklch(42.6% 0.164 258.9)
-
Step 900
900
#063D89
oklch(37.8% 0.138 258.8)
-
Step 950
950
#072450
oklch(26.9% 0.088 259)
#5597FD 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) | #68A0FF | 0.032 |
| Deuteranopia (no green cones) | #4E90FB | 0.020 |
| Tritanopia (no blue cones) | #00AEBE | 0.132 |
| Achromatopsia (no color) | #979797 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5597FD
#5597FD
oklch(68.1% 0.166 258.9)
- #C78C00
#C78C00
oklch(68.1% 0.142 78.7)
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 #5597FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.025
- Cornflower Blue #6495ED ΔE 0.026
- Dodger Blue #1E90FF ΔE 0.042
- Soft Blue #6488EA ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.046
- Periwinkle Blue #8F99FB ΔE 0.066
- Lavender Blue #8B88F8 ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.072
Use #5597FD 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.