#99ABC9
Closest named color: Cool Steel (#97A7B3). oklch(73.7% 0.048 260.6), rgb(153, 171, 201).
Aa
Black text reads best on this color (9.02:1).
About this color
#99ABC9 is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.048 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.031 away. Black text reads best on it, at 9.02:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.02:1 |
| White text | 2.32:1 |
Values
| HEX | #99ABC9 |
| RGB | rgb(153, 171, 201) |
| HSL | hsl(218, 31%, 69%) |
| OKLCH | oklch(73.7% 0.048 260.6) |
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 #99ABC9 | 2.32:1 | Fails | Lc -50.8 | Large or bold text, headings |
| Black text on #99ABC9 | 9.02:1 | AAA | Lc 58.1 | Large or bold text, headings |
| #99ABC9 text on white | 2.32:1 | Fails | Lc 45.9 | Large or bold text, headings |
| #99ABC9 text on black | 9.02:1 | AAA | Lc -56.2 | 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
#D3D9E4
oklch(88.4% 0.016 262.7)
-
Step 300
300
#B6C1D5
oklch(80.9% 0.031 262.5)
-
Step 400
400 (this color)
#99ABC9
oklch(73.7% 0.048 260.6)
-
Step 500
500
#748AAF
oklch(63% 0.062 260.7)
-
Step 600
600
#5D749B
oklch(55.6% 0.067 260.8)
-
Step 700
700
#4C6184
oklch(49% 0.062 260.4)
-
Step 800
800
#3F4F6B
oklch(42.6% 0.051 261.4)
-
Step 900
900
#354257
oklch(37.7% 0.04 259.9)
-
Step 950
950
#1F2733
oklch(27.1% 0.025 258.3)
#99ABC9 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) | #A1ACCA | 0.011 |
| Deuteranopia (no green cones) | #9CA8C8 | 0.008 |
| Tritanopia (no blue cones) | #8CB1B5 | 0.042 |
| Achromatopsia (no color) | #AAAAAA | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99ABC9
#99ABC9
oklch(73.7% 0.048 260.6)
- #BAA788
#BAA788
oklch(73.7% 0.048 79.9)
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 #99ABC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.031
- Light Grey Blue #9DBCD4 ΔE 0.046
- French Gray #ADB5BD ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.047
- Dark Gray #A9A9A9 ΔE 0.048
- Bluey Grey #89A0B0 ΔE 0.049
- Cool Grey #95A3A6 ΔE 0.051
- Pewter #96A8A1 ΔE 0.058
Use #99ABC9 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.