#999BC4
Closest named color: Cool Gray (#8D99AE). oklch(70.2% 0.06 282.6), rgb(153, 155, 196).
Aa
Black text reads best on this color (7.84:1).
About this color
#999BC4 is a medium-light, muted purple. In OKLCH its lightness is 70%, its chroma 0.060 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.038 away. Black text reads best on it, at 7.84:1.
| Hue family | Purples |
| Lightness | medium-light (70%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.84:1 |
| White text | 2.67:1 |
Values
| HEX | #999BC4 |
| RGB | rgb(153, 155, 196) |
| HSL | hsl(237, 27%, 68%) |
| OKLCH | oklch(70.2% 0.06 282.6) |
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 #999BC4 | 2.67:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #999BC4 | 7.84:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #999BC4 text on white | 2.67:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #999BC4 text on black | 7.84:1 | AAA | Lc -49.8 | 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
#D7D8E7
oklch(88.6% 0.02 282.9)
-
Step 300
300
#BCBED9
oklch(80.9% 0.038 282.2)
-
Step 400
400 (this color)
#999BC4
oklch(70.2% 0.06 282.6)
-
Step 500
500
#8284B7
oklch(63.1% 0.076 282.2)
-
Step 600
600
#6C6DA3
oklch(55.6% 0.083 282.5)
-
Step 700
700
#5A5B8B
oklch(49.1% 0.076 282.3)
-
Step 800
800
#4A4A71
oklch(42.6% 0.064 283.3)
-
Step 900
900
#3D3E5C
oklch(37.6% 0.051 282.2)
-
Step 950
950
#242536
oklch(27.1% 0.031 281.5)
#999BC4 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) | #909FC6 | 0.015 |
| Deuteranopia (no green cones) | #8F9DC3 | 0.014 |
| Tritanopia (no blue cones) | #8FA2A9 | 0.052 |
| Achromatopsia (no color) | #9E9E9E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999BC4
#999BC4
oklch(70.2% 0.06 282.6)
- #A6A176
#A6A176
oklch(70.2% 0.059 102.2)
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 #999BC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.038
- Bluey Grey #89A0B0 ΔE 0.043
- Cool Steel #97A7B3 ΔE 0.048
- Bluegrey #85A3B2 ΔE 0.048
- Greyblue #77A1B5 ΔE 0.054
- Cool Grey #95A3A6 ΔE 0.057
- Pale Purple #B790D4 ΔE 0.060
- Heather #A484AC ΔE 0.062
Use #999BC4 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.