#2B2F40
Closest named color: Space Cadet (#2B2D42). oklch(30.9% 0.031 274.2), rgb(43, 47, 64).
Aa
White text reads best on this color (13.26:1).
About this color
#2B2F40 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.031 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.009 away. White text reads best on it, at 13.26:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.58:1 |
| White text | 13.26:1 |
Values
| HEX | #2B2F40 |
| RGB | rgb(43, 47, 64) |
| HSL | hsl(229, 20%, 21%) |
| OKLCH | oklch(30.9% 0.031 274.2) |
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 #2B2F40 | 13.26:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #2B2F40 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #2B2F40 text on white | 13.26:1 | AAA | Lc 99.6 | Preferred for body text |
| #2B2F40 text on black | 1.58:1 | 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
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#B9BFD9
oklch(80.8% 0.037 275.2)
-
Step 400
400
#959EC6
oklch(70.6% 0.059 274.9)
-
Step 500
500
#7B86B8
oklch(63% 0.077 274.4)
-
Step 600
600
#6470A3
oklch(55.6% 0.081 273.4)
-
Step 700
700
#535D8C
oklch(49% 0.076 274.1)
-
Step 800
800
#444C72
oklch(42.6% 0.064 274.3)
-
Step 900
900
#39405C
oklch(37.8% 0.049 273.1)
-
Step 950
950 (this color)
#2B2F40
oklch(30.9% 0.031 274.2)
#2B2F40 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) | #2A3141 | 0.006 |
| Deuteranopia (no green cones) | #282F40 | 0.005 |
| Tritanopia (no blue cones) | #263235 | 0.027 |
| Achromatopsia (no color) | #303030 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B2F40
#2B2F40
oklch(30.9% 0.031 274.2)
- #35301E
#35301E
oklch(30.9% 0.031 94.4)
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 #2B2F40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.009
- Gunmetal #293241 ΔE 0.010
- Dark Blue Grey #1F3B4D ΔE 0.041
- Onyx #343A40 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.043
- Midnight Green #073B4C ΔE 0.049
- Dark #1B2431 ΔE 0.052
Use #2B2F40 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.