#999BCB
Closest named color: Cool Gray (#8D99AE). oklch(70.5% 0.07 282.6), rgb(153, 155, 203).
Aa
Black text reads best on this color (7.90:1).
About this color
#999BCB is a medium-light, muted purple. In OKLCH its lightness is 71%, its chroma 0.070 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.047 away. Black text reads best on it, at 7.90:1.
| Hue family | Purples |
| Lightness | medium-light (71%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.90:1 |
| White text | 2.65:1 |
Values
| HEX | #999BCB |
| RGB | rgb(153, 155, 203) |
| HSL | hsl(238, 32%, 70%) |
| OKLCH | oklch(70.5% 0.07 282.6) |
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 #999BCB | 2.65:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #999BCB | 7.90:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #999BCB text on white | 2.65:1 | Fails | Lc 51.7 | Large or bold text, headings |
| #999BCB text on black | 7.90:1 | AAA | Lc -50.2 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D7E9
oklch(88.4% 0.025 283.3)
-
Step 300
300
#BCBEDD
oklch(81% 0.044 282.5)
-
Step 400
400 (this color)
#999BCB
oklch(70.5% 0.07 282.6)
-
Step 500
500
#8183BE
oklch(63.2% 0.088 282.1)
-
Step 600
600
#6B6BAB
oklch(55.5% 0.098 282.7)
-
Step 700
700
#595992
oklch(49% 0.09 282.5)
-
Step 800
800
#494977
oklch(42.7% 0.076 282.7)
-
Step 900
900
#3D3D60
oklch(37.6% 0.059 283.2)
-
Step 950
950
#242438
oklch(27% 0.037 283.7)
#999BCB 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) | #8EA0CD | 0.018 |
| Deuteranopia (no green cones) | #8C9DCA | 0.018 |
| Tritanopia (no blue cones) | #8DA3AB | 0.062 |
| Achromatopsia (no color) | #9F9F9F | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999BCB
#999BCB
oklch(70.5% 0.07 282.6)
- #A8A26F
#A8A26F
oklch(70.5% 0.07 102.3)
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 #999BCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.047
- Bluey Grey #89A0B0 ΔE 0.052
- Pale Purple #B790D4 ΔE 0.055
- Cool Steel #97A7B3 ΔE 0.056
- Bluegrey #85A3B2 ΔE 0.056
- Greyblue #77A1B5 ΔE 0.061
- Heather #A484AC ΔE 0.065
- Cool Grey #95A3A6 ΔE 0.066
Use #999BCB 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.