#99ADCC
Closest named color: Cool Steel (#97A7B3). oklch(74.3% 0.05 259.1), rgb(153, 173, 204).
Aa
Black text reads best on this color (9.20:1).
About this color
#99ADCC is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.050 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.036 away. Black text reads best on it, at 9.20:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.20:1 |
| White text | 2.28:1 |
Values
| HEX | #99ADCC |
| RGB | rgb(153, 173, 204) |
| HSL | hsl(216, 33%, 70%) |
| OKLCH | oklch(74.3% 0.05 259.1) |
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 #99ADCC | 2.28:1 | Fails | Lc -49.8 | Large or bold text, headings |
| Black text on #99ADCC | 9.20:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #99ADCC text on white | 2.28:1 | Fails | Lc 45.0 | Non-text elements, placeholder text |
| #99ADCC text on black | 9.20:1 | AAA | Lc -57.1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B5C2D5
oklch(81% 0.03 257.8)
-
Step 400
400 (this color)
#99ADCC
oklch(74.3% 0.05 259.1)
-
Step 500
500
#728BB1
oklch(63.2% 0.064 258.6)
-
Step 600
600
#5B749C
oklch(55.6% 0.069 259.6)
-
Step 700
700
#4A6186
oklch(49% 0.066 259.7)
-
Step 800
800
#3D506D
oklch(42.8% 0.054 258.7)
-
Step 900
900
#344258
oklch(37.6% 0.042 259.3)
-
Step 950
950
#1F2734
oklch(27.1% 0.027 260)
#99ADCC 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) | #A3AECE | 0.014 |
| Deuteranopia (no green cones) | #9DA9CB | 0.011 |
| Tritanopia (no blue cones) | #8BB3B7 | 0.044 |
| Achromatopsia (no color) | #ACACAC | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99ADCC
#99ADCC
oklch(74.3% 0.05 259.1)
- #BDA988
#BDA988
oklch(74.4% 0.051 80.2)
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 #99ADCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.036
- Light Grey Blue #9DBCD4 ΔE 0.040
- French Gray #ADB5BD ΔE 0.045
- Dark Gray #A9A9A9 ΔE 0.051
- Bluegrey #85A3B2 ΔE 0.051
- Light Cornflower Blue #98C1D9 ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.054
- Cool Grey #95A3A6 ΔE 0.055
Use #99ADCC 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.