#99ADD4
Closest named color: Light Grey Blue (#9DBCD4). oklch(74.6% 0.061 263.6), rgb(153, 173, 212).
Aa
Black text reads best on this color (9.28:1).
About this color
#99ADD4 is a medium-light, muted blue. In OKLCH its lightness is 75%, its chroma 0.061 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.042 away. Black text reads best on it, at 9.28:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.28:1 |
| White text | 2.26:1 |
Values
| HEX | #99ADD4 |
| RGB | rgb(153, 173, 212) |
| HSL | hsl(220, 41%, 72%) |
| OKLCH | oklch(74.6% 0.061 263.6) |
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 #99ADD4 | 2.26:1 | Fails | Lc -49.4 | Large or bold text, headings |
| Black text on #99ADD4 | 9.28:1 | AAA | Lc 59.4 | Large or bold text, headings |
| #99ADD4 text on white | 2.26:1 | Fails | Lc 44.6 | Non-text elements, placeholder text |
| #99ADD4 text on black | 9.28:1 | AAA | Lc -57.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400 (this color)
#99ADD4
oklch(74.6% 0.061 263.6)
-
Step 500
500
#7189B9
oklch(63% 0.078 263.8)
-
Step 600
600
#5A73A5
oklch(55.7% 0.084 263.5)
-
Step 700
700
#49608E
oklch(49.1% 0.079 263.4)
-
Step 800
800
#3C4E73
oklch(42.6% 0.066 264)
-
Step 900
900
#34415D
oklch(37.7% 0.051 264.9)
-
Step 950
950
#1E2636
oklch(26.9% 0.032 263.8)
#99ADD4 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) | #A0AFD6 | 0.011 |
| Deuteranopia (no green cones) | #9BAAD3 | 0.008 |
| Tritanopia (no blue cones) | #89B5BA | 0.054 |
| Achromatopsia (no color) | #ACACAC | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99ADD4
#99ADD4
oklch(74.6% 0.061 263.6)
- #BFAA81
#BFAA81
oklch(74.6% 0.061 83.9)
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 #99ADD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.042
- Cool Steel #97A7B3 ΔE 0.047
- French Gray #ADB5BD ΔE 0.052
- Light Cornflower Blue #98C1D9 ΔE 0.053
- Bluegrey #85A3B2 ΔE 0.060
- Carolina Blue #8AB8FE ΔE 0.061
- Dark Gray #A9A9A9 ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.062
Use #99ADD4 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.