#2A2837
Closest named color: Space Cadet (#2B2D42). oklch(28.6% 0.027 290.7), rgb(42, 40, 55).
Aa
White text reads best on this color (14.41:1).
About this color
#2A2837 is a dark close to neutral grey. In OKLCH its lightness is 29%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.023 away. White text reads best on it, at 14.41:1.
| Hue family | Neutrals |
| Lightness | dark (29%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.45:1 |
| White text | 14.41:1 |
Values
| HEX | #2A2837 |
| RGB | rgb(42, 40, 55) |
| HSL | hsl(248, 16%, 19%) |
| OKLCH | oklch(28.6% 0.027 290.7) |
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 #2A2837 | 14.41:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #2A2837 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #2A2837 text on white | 14.41:1 | AAA | Lc 101.2 | Preferred for body text |
| #2A2837 text on black | 1.45:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D9D7E4
oklch(88.5% 0.018 293.1)
-
Step 300
300
#C0BDD5
oklch(80.8% 0.034 291.4)
-
Step 400
400
#A09BBF
oklch(70.6% 0.052 291.4)
-
Step 500
500
#8983AF
oklch(63.1% 0.066 290.6)
-
Step 600
600
#736C9B
oklch(55.6% 0.072 290.7)
-
Step 700
700
#605A84
oklch(49.1% 0.067 290.3)
-
Step 800
800
#4F4A6B
oklch(42.8% 0.054 290.9)
-
Step 900
900
#413E57
oklch(37.7% 0.042 289.7)
-
Step 950
950 (this color)
#2A2837
oklch(28.6% 0.027 290.7)
#2A2837 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) | #242A38 | 0.011 |
| Deuteranopia (no green cones) | #242937 | 0.011 |
| Tritanopia (no blue cones) | #272A2D | 0.023 |
| Achromatopsia (no color) | #2A2A2A | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A2837
#2A2837
oklch(28.6% 0.027 290.7)
- #2B2C1C
#2B2C1C
oklch(28.7% 0.027 111)
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 #2A2837, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.023
- Oxford Blue #1B263B ΔE 0.028
- Jet #212529 ΔE 0.032
- Dark #1B2431 ΔE 0.032
- Gunmetal #293241 ΔE 0.033
- Onyx #343A40 ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.065
Use #2A2837 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.