#90ADD4
Closest named color: Cool Steel (#97A7B3). oklch(74% 0.065 255.9), rgb(144, 173, 212).
Aa
Black text reads best on this color (9.11:1).
About this color
#90ADD4 is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.065 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.046 away. Black text reads best on it, at 9.11:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.11:1 |
| White text | 2.30:1 |
Values
| HEX | #90ADD4 |
| RGB | rgb(144, 173, 212) |
| HSL | hsl(214, 44%, 70%) |
| OKLCH | oklch(74% 0.065 255.9) |
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 #90ADD4 | 2.30:1 | Fails | Lc -50.3 | Large or bold text, headings |
| Black text on #90ADD4 | 9.11:1 | AAA | Lc 58.6 | Large or bold text, headings |
| #90ADD4 text on white | 2.30:1 | Fails | Lc 45.4 | Large or bold text, headings |
| #90ADD4 text on black | 9.11:1 | AAA | Lc -56.7 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B0C2DB
oklch(80.8% 0.041 256.6)
-
Step 400
400 (this color)
#90ADD4
oklch(74% 0.065 255.9)
-
Step 500
500
#688CBC
oklch(63.2% 0.083 255.8)
-
Step 600
600
#4F75A8
oklch(55.6% 0.091 256.1)
-
Step 700
700
#406290
oklch(49.1% 0.084 256.3)
-
Step 800
800
#355075
oklch(42.7% 0.07 256.5)
-
Step 900
900
#2E435E
oklch(37.8% 0.054 255.1)
-
Step 950
950
#1B2737
oklch(26.9% 0.034 255.8)
#90ADD4 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) | #9FAED6 | 0.020 |
| Deuteranopia (no green cones) | #98A8D3 | 0.016 |
| Tritanopia (no blue cones) | #7CB5BA | 0.056 |
| Achromatopsia (no color) | #ABABAB | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90ADD4
#90ADD4
oklch(74% 0.065 255.9)
- #C3A67D
#C3A67D
oklch(74.1% 0.065 76)
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 #90ADD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.046
- Light Grey Blue #9DBCD4 ΔE 0.046
- Bluegrey #85A3B2 ΔE 0.054
- Light Cornflower Blue #98C1D9 ΔE 0.056
- Bluey Grey #89A0B0 ΔE 0.057
- French Gray #ADB5BD ΔE 0.059
- Carolina Blue #8AB8FE ΔE 0.060
- Greyblue #77A1B5 ΔE 0.062
Use #90ADD4 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.