#999FCA
Closest named color: Cool Gray (#8D99AE). oklch(71.3% 0.063 278.5), rgb(153, 159, 202).
Aa
Black text reads best on this color (8.16:1).
About this color
#999FCA is a medium-light, muted blue. In OKLCH its lightness is 71%, its chroma 0.063 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.046 away. Black text reads best on it, at 8.16:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 8.16:1 |
| White text | 2.57:1 |
Values
| HEX | #999FCA |
| RGB | rgb(153, 159, 202) |
| HSL | hsl(233, 32%, 70%) |
| OKLCH | oklch(71.3% 0.063 278.5) |
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 #999FCA | 2.57:1 | Fails | Lc -55.4 | Large or bold text, headings |
| Black text on #999FCA | 8.16:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #999FCA text on white | 2.57:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #999FCA text on black | 8.16:1 | AAA | Lc -51.6 | 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
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E8
oklch(88.5% 0.022 277.5)
-
Step 300
300
#BABFDA
oklch(80.9% 0.038 277.2)
-
Step 400
400 (this color)
#999FCA
oklch(71.3% 0.063 278.5)
-
Step 500
500
#7E85BA
oklch(63.2% 0.08 278)
-
Step 600
600
#686EA6
oklch(55.7% 0.087 278.5)
-
Step 700
700
#565C8E
oklch(49.2% 0.08 277.8)
-
Step 800
800
#474B74
oklch(42.8% 0.068 278.8)
-
Step 900
900
#3B3F5D
oklch(37.7% 0.052 277.8)
-
Step 950
950
#232537
oklch(27.1% 0.034 279)
#999FCA 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) | #93A3CC | 0.012 |
| Deuteranopia (no green cones) | #90A0C9 | 0.012 |
| Tritanopia (no blue cones) | #8DA7AE | 0.056 |
| Achromatopsia (no color) | #A1A1A1 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999FCA
#999FCA
oklch(71.3% 0.063 278.5)
- #ACA376
#ACA376
oklch(71.2% 0.062 98.2)
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 #999FCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.046
- Cool Steel #97A7B3 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.050
- Greyblue #77A1B5 ΔE 0.057
- Cool Grey #95A3A6 ΔE 0.059
- Pale Purple #B790D4 ΔE 0.061
- Dark Gray #A9A9A9 ΔE 0.067
Use #999FCA 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.