#99A3BC
Closest named color: Cool Steel (#97A7B3). oklch(71.6% 0.038 268.2), rgb(153, 163, 188).
Aa
Black text reads best on this color (8.31:1).
About this color
#99A3BC is a medium-light, muted blue. In OKLCH its lightness is 72%, its chroma 0.038 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.020 away. Black text reads best on it, at 8.31:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.31:1 |
| White text | 2.52:1 |
Values
| HEX | #99A3BC |
| RGB | rgb(153, 163, 188) |
| HSL | hsl(223, 21%, 67%) |
| OKLCH | oklch(71.6% 0.038 268.2) |
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 #99A3BC | 2.52:1 | Fails | Lc -54.6 | Large or bold text, headings |
| Black text on #99A3BC | 8.31:1 | AAA | Lc 54.5 | Large or bold text, headings |
| #99A3BC text on white | 2.52:1 | Fails | Lc 49.5 | Large or bold text, headings |
| #99A3BC text on black | 8.31:1 | AAA | Lc -52.4 | 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
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#BAC0D1
oklch(80.8% 0.025 270.3)
-
Step 400
400 (this color)
#99A3BC
oklch(71.6% 0.038 268.2)
-
Step 500
500
#7D89A8
oklch(63.2% 0.049 268.4)
-
Step 600
600
#667393
oklch(55.7% 0.052 267.5)
-
Step 700
700
#55607D
oklch(49.1% 0.049 268.4)
-
Step 800
800
#454E66
oklch(42.6% 0.042 268.6)
-
Step 900
900
#3A4153
oklch(37.6% 0.032 268.2)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#99A3BC 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) | #9CA5BD | 0.007 |
| Deuteranopia (no green cones) | #99A2BB | 0.003 |
| Tritanopia (no blue cones) | #91A8AB | 0.035 |
| Achromatopsia (no color) | #A3A3A3 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99A3BC
#99A3BC
oklch(71.6% 0.038 268.2)
- #ADA289
#ADA289
oklch(71.5% 0.037 87.1)
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 #99A3BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.020
- Bluey Grey #89A0B0 ΔE 0.029
- Bluegrey #85A3B2 ΔE 0.031
- Cool Grey #95A3A6 ΔE 0.034
- Cool Gray #8D99AE ΔE 0.036
- Dark Gray #A9A9A9 ΔE 0.043
- Greyblue #77A1B5 ΔE 0.046
- Pewter #96A8A1 ΔE 0.047
Use #99A3BC 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.