#2B2D3F
Closest named color: Space Cadet (#2B2D42). oklch(30.3% 0.033 279.3), rgb(43, 45, 63).
Aa
White text reads best on this color (13.54:1).
About this color
#2B2D3F is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.033 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.006 away. White text reads best on it, at 13.54:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.54:1 |
| White text | 13.54:1 |
Values
| HEX | #2B2D3F |
| RGB | rgb(43, 45, 63) |
| HSL | hsl(234, 19%, 21%) |
| OKLCH | oklch(30.3% 0.033 279.3) |
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 #2B2D3F | 13.54:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #2B2D3F | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #2B2D3F text on white | 13.54:1 | AAA | Lc 100.0 | Preferred for body text |
| #2B2D3F text on black | 1.54:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E8
oklch(88.5% 0.022 280.3)
-
Step 300
300
#BBBFDA
oklch(81% 0.038 278.8)
-
Step 400
400
#989DC7
oklch(70.7% 0.062 279.4)
-
Step 500
500
#7F85B9
oklch(63.2% 0.078 278.8)
-
Step 600
600
#696EA5
oklch(55.7% 0.085 279.3)
-
Step 700
700
#575B8D
oklch(49% 0.08 279.5)
-
Step 800
800
#474B73
oklch(42.7% 0.066 278.8)
-
Step 900
900
#3C3F5D
oklch(37.8% 0.051 279.2)
-
Step 950
950 (this color)
#2B2D3F
oklch(30.3% 0.033 279.3)
#2B2D3F 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) | #282F40 | 0.008 |
| Deuteranopia (no green cones) | #272D3F | 0.007 |
| Tritanopia (no blue cones) | #263033 | 0.029 |
| Achromatopsia (no color) | #2E2E2E | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B2D3F
#2B2D3F
oklch(30.3% 0.033 279.3)
- #332F1C
#332F1C
oklch(30.4% 0.032 97.7)
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 #2B2D3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.006
- Gunmetal #293241 ΔE 0.016
- Oxford Blue #1B263B ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.047
- Dark #1B2431 ΔE 0.047
- Onyx #343A40 ΔE 0.047
- Jet #212529 ΔE 0.048
Use #2B2D3F 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.