#55A7DD
Closest named color: Cornflower Blue (#6495ED). oklch(69.9% 0.113 239.9), rgb(85, 167, 221).
Aa
Black text reads best on this color (7.95:1).
About this color
#55A7DD is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.113 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.060 away. Black text reads best on it, at 7.95:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.95:1 |
| White text | 2.63:1 |
Values
| HEX | #55A7DD |
| RGB | rgb(85, 167, 221) |
| HSL | hsl(204, 67%, 60%) |
| OKLCH | oklch(69.9% 0.113 239.9) |
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 #55A7DD | 2.63:1 | Fails | Lc -56.4 | Large or bold text, headings |
| Black text on #55A7DD | 7.95:1 | AAA | Lc 52.8 | Large or bold text, headings |
| #55A7DD text on white | 2.63:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #55A7DD text on black | 7.95:1 | AAA | Lc -50.7 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C3DDF1
oklch(88.5% 0.039 241.1)
-
Step 300
300
#97C7EA
oklch(80.8% 0.071 240.4)
-
Step 400
400 (this color)
#55A7DD
oklch(69.9% 0.113 239.9)
-
Step 500
500
#0193D7
oklch(63.2% 0.144 239.7)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557F
oklch(42.8% 0.098 239.8)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950
#022A40
oklch(27.1% 0.059 238.8)
#55A7DD 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) | #8EA7E0 | 0.060 |
| Deuteranopia (no green cones) | #7C99DC | 0.051 |
| Tritanopia (no blue cones) | #00B5B9 | 0.084 |
| Achromatopsia (no color) | #9F9F9F | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55A7DD
#55A7DD
oklch(69.9% 0.113 239.9)
- #D18C51
#D18C51
oklch(69.8% 0.113 59.9)
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 #55A7DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.060
- Greyblue #77A1B5 ΔE 0.062
- Turquoise Blue #06B1C4 ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.064
- Deep Sky Blue #00BFFF ΔE 0.072
- Bluegrey #85A3B2 ΔE 0.074
- Dark Sky Blue #448EE4 ΔE 0.076
- Bluey Grey #89A0B0 ΔE 0.078
Use #55A7DD 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.