#99ADCA
Closest named color: Cool Steel (#97A7B3). oklch(74.2% 0.048 257.6), rgb(153, 173, 202).
Aa
Black text reads best on this color (9.18:1).
About this color
#99ADCA is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.048 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.033 away. Black text reads best on it, at 9.18:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.18:1 |
| White text | 2.28:1 |
Values
| HEX | #99ADCA |
| RGB | rgb(153, 173, 202) |
| HSL | hsl(216, 32%, 70%) |
| OKLCH | oklch(74.2% 0.048 257.6) |
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 #99ADCA | 2.28:1 | Fails | Lc -49.9 | Large or bold text, headings |
| Black text on #99ADCA | 9.18:1 | AAA | Lc 58.9 | Large or bold text, headings |
| #99ADCA text on white | 2.28:1 | Fails | Lc 45.1 | Large or bold text, headings |
| #99ADCA text on black | 9.18:1 | AAA | Lc -57.0 | 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
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B5C2D4
oklch(81% 0.029 256.5)
-
Step 400
400 (this color)
#99ADCA
oklch(74.2% 0.048 257.6)
-
Step 500
500
#728BAF
oklch(63.1% 0.062 257.5)
-
Step 600
600
#5B759A
oklch(55.7% 0.065 257.2)
-
Step 700
700
#4A6284
oklch(49.1% 0.062 257.1)
-
Step 800
800
#3D506B
oklch(42.7% 0.051 257.2)
-
Step 900
900
#344257
oklch(37.6% 0.041 258.3)
-
Step 950
950
#1F2733
oklch(27.1% 0.025 258.3)
#99ADCA 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) | #A3AECB | 0.014 |
| Deuteranopia (no green cones) | #9EA9C9 | 0.012 |
| Tritanopia (no blue cones) | #8CB3B6 | 0.042 |
| Achromatopsia (no color) | #ABABAB | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99ADCA
#99ADCA
oklch(74.2% 0.048 257.6)
- #BDA88A
#BDA88A
oklch(74.2% 0.048 76.7)
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 #99ADCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.033
- Light Grey Blue #9DBCD4 ΔE 0.040
- French Gray #ADB5BD ΔE 0.043
- Dark Gray #A9A9A9 ΔE 0.048
- Bluegrey #85A3B2 ΔE 0.050
- Bluey Grey #89A0B0 ΔE 0.052
- Light Cornflower Blue #98C1D9 ΔE 0.052
- Cool Grey #95A3A6 ΔE 0.053
Use #99ADCA 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.