#2D3F52
Closest named color: Charcoal (#264653). oklch(36.1% 0.04 250.3), rgb(45, 63, 82).
Aa
White text reads best on this color (10.80:1).
About this color
#2D3F52 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.040 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.023 away. White text reads best on it, at 10.80:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.94:1 |
| White text | 10.80:1 |
Values
| HEX | #2D3F52 |
| RGB | rgb(45, 63, 82) |
| HSL | hsl(211, 29%, 25%) |
| OKLCH | oklch(36.1% 0.04 250.3) |
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 #2D3F52 | 10.80:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #2D3F52 | 1.94:1 | Fails | Lc 8.9 | Not readable |
| #2D3F52 text on white | 10.80:1 | AAA | Lc 95.0 | Preferred for body text |
| #2D3F52 text on black | 1.94:1 | Fails | Lc -7.6 | 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 900.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B2C3D4
oklch(81% 0.03 248.2)
-
Step 400
400
#8AA3BE
oklch(70.6% 0.049 250.5)
-
Step 500
500
#6D8DAE
oklch(63.2% 0.062 249.6)
-
Step 600
600
#55769A
oklch(55.5% 0.068 251.2)
-
Step 700
700
#456383
oklch(49% 0.063 250.8)
-
Step 800
800
#39516B
oklch(42.7% 0.053 251.1)
-
Step 900
900 (this color)
#2D3F52
oklch(36.1% 0.04 250.3)
-
Step 950
950
#1D2733
oklch(26.9% 0.027 253.3)
#2D3F52 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) | #383F53 | 0.016 |
| Deuteranopia (no green cones) | #333C52 | 0.012 |
| Tritanopia (no blue cones) | #1F4345 | 0.035 |
| Achromatopsia (no color) | #3D3D3D | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3F52
#2D3F52
oklch(36.1% 0.04 250.3)
- #4B3A25
#4B3A25
oklch(36.1% 0.041 71.8)
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 #2D3F52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.023
- Dark Grey Blue #29465B ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.025
- Onyx #343A40 ΔE 0.031
- Charcoal Grey #3C4142 ΔE 0.037
- Midnight Green #073B4C ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.043
- Gunmetal #293241 ΔE 0.047
Use #2D3F52 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.