#55A5FF
Closest named color: Cornflower Blue (#6495ED). oklch(71.2% 0.154 253.1), rgb(85, 165, 255).
Aa
Black text reads best on this color (8.21:1).
About this color
#55A5FF is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.154 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.045 away. Black text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.21:1 |
| White text | 2.55:1 |
Values
| HEX | #55A5FF |
| RGB | rgb(85, 165, 255) |
| HSL | hsl(212, 100%, 67%) |
| OKLCH | oklch(71.2% 0.154 253.1) |
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 #55A5FF | 2.55:1 | Fails | Lc -54.9 | Large or bold text, headings |
| Black text on #55A5FF | 8.21:1 | AAA | Lc 54.2 | Large or bold text, headings |
| #55A5FF text on white | 2.55:1 | Fails | Lc 49.8 | Large or bold text, headings |
| #55A5FF text on black | 8.21:1 | AAA | Lc -52.2 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DDEBFD
oklch(93.5% 0.029 254.7)
-
Step 200
200
#C1DCFC
oklch(88.5% 0.053 252.8)
-
Step 300
300
#94C5FE
oklch(81% 0.096 252.7)
-
Step 400
400 (this color)
#55A5FF
oklch(71.2% 0.154 253.1)
-
Step 500
500
#0089FA
oklch(63.1% 0.195 253)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#00417D
oklch(37.6% 0.117 253.3)
-
Step 950
950
#01264C
oklch(26.9% 0.081 253)
#55A5FF 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) | #7DABFF | 0.044 |
| Deuteranopia (no green cones) | #659BFD | 0.027 |
| Tritanopia (no blue cones) | #00BAC6 | 0.121 |
| Achromatopsia (no color) | #A2A2A2 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55A5FF
#55A5FF
oklch(71.2% 0.154 253.1)
- #DA9100
#DA9100
oklch(71.3% 0.151 73.5)
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 #55A5FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.045
- Chefchaouen Blue #4895EF ΔE 0.048
- Periwinkle Blue #8F99FB ΔE 0.064
- Dodger Blue #1E90FF ΔE 0.070
- Dark Sky Blue #448EE4 ΔE 0.072
- Deep Sky Blue #00BFFF ΔE 0.072
- Soft Blue #6488EA ΔE 0.076
- Carolina Blue #8AB8FE ΔE 0.078
Use #55A5FF 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.