#999EC7
Closest named color: Cool Gray (#8D99AE). oklch(71% 0.06 279.3), rgb(153, 158, 199).
Aa
Black text reads best on this color (8.06:1).
About this color
#999EC7 is a medium-light, muted blue. In OKLCH its lightness is 71%, its chroma 0.060 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.042 away. Black text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 8.06:1 |
| White text | 2.60:1 |
Values
| HEX | #999EC7 |
| RGB | rgb(153, 158, 199) |
| HSL | hsl(233, 29%, 69%) |
| OKLCH | oklch(71% 0.06 279.3) |
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 #999EC7 | 2.60:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #999EC7 | 8.06:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #999EC7 text on white | 2.60:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #999EC7 text on black | 8.06:1 | AAA | Lc -51.1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BBBFD9
oklch(81% 0.037 278.6)
-
Step 400
400 (this color)
#999EC7
oklch(71% 0.06 279.3)
-
Step 500
500
#7F85B8
oklch(63.1% 0.077 278.8)
-
Step 600
600
#696EA4
oklch(55.6% 0.084 279.2)
-
Step 700
700
#575C8C
oklch(49.1% 0.077 278.6)
-
Step 800
800
#484B72
oklch(42.7% 0.065 279.9)
-
Step 900
900
#3C3F5C
oklch(37.8% 0.05 279.2)
-
Step 950
950
#232536
oklch(27% 0.032 278.9)
#999EC7 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) | #93A2C9 | 0.012 |
| Deuteranopia (no green cones) | #919FC6 | 0.011 |
| Tritanopia (no blue cones) | #8EA5AC | 0.053 |
| Achromatopsia (no color) | #A0A0A0 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999EC7
#999EC7
oklch(71% 0.06 279.3)
- #AAA377
#AAA377
oklch(71% 0.061 100.1)
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 #999EC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.044
- Cool Steel #97A7B3 ΔE 0.045
- Bluegrey #85A3B2 ΔE 0.047
- Greyblue #77A1B5 ΔE 0.055
- Cool Grey #95A3A6 ΔE 0.056
- Pale Purple #B790D4 ΔE 0.062
- Dark Gray #A9A9A9 ΔE 0.065
Use #999EC7 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.