#2D4152
Closest named color: Charcoal (#264653). oklch(36.6% 0.039 244.8), rgb(45, 65, 82).
Aa
White text reads best on this color (10.55:1).
About this color
#2D4152 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.039 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.017 away. White text reads best on it, at 10.55:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.98:1 |
| White text | 10.55:1 |
Values
| HEX | #2D4152 |
| RGB | rgb(45, 65, 82) |
| HSL | hsl(208, 29%, 25%) |
| OKLCH | oklch(36.6% 0.039 244.8) |
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 #2D4152 | 10.55:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #2D4152 | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #2D4152 text on white | 10.55:1 | AAA | Lc 94.4 | Preferred for body text |
| #2D4152 text on black | 1.98:1 | Fails | Lc -8.1 | 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
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE3
oklch(88.6% 0.015 241.8)
-
Step 300
300
#B2C3D3
oklch(80.9% 0.029 246.5)
-
Step 400
400
#89A4BC
oklch(70.6% 0.046 245.3)
-
Step 500
500
#6B8EAC
oklch(63.2% 0.06 244.8)
-
Step 600
600
#527897
oklch(55.7% 0.065 243.9)
-
Step 700
700
#436481
oklch(49% 0.061 246)
-
Step 800
800
#375269
oklch(42.7% 0.05 245.1)
-
Step 900
900 (this color)
#2D4152
oklch(36.6% 0.039 244.8)
-
Step 950
950
#1C2832
oklch(27% 0.025 244)
#2D4152 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) | #3A4153 | 0.019 |
| Deuteranopia (no green cones) | #353D52 | 0.016 |
| Tritanopia (no blue cones) | #1F4547 | 0.032 |
| Achromatopsia (no color) | #3F3F3F | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4152
#2D4152
oklch(36.6% 0.039 244.8)
- #4D3A29
#4D3A29
oklch(36.5% 0.038 63)
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 #2D4152, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.017
- Dark Grey Blue #29465B ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.029
- Onyx #343A40 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.034
- Midnight Green #073B4C ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.049
Use #2D4152 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.