#2D374B
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.7% 0.038 263.9), rgb(45, 55, 75).
Aa
White text reads best on this color (11.93:1).
About this color
#2D374B is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.038 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.021 away. White text reads best on it, at 11.93:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.75:1 |
| White text | 11.93:1 |
Values
| HEX | #2D374B |
| RGB | rgb(45, 55, 75) |
| HSL | hsl(220, 25%, 24%) |
| OKLCH | oklch(33.7% 0.038 263.9) |
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 #2D374B | 11.93:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #2D374B | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #2D374B text on white | 11.93:1 | AAA | Lc 97.3 | Preferred for body text |
| #2D374B text on black | 1.75:1 | 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 900.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E4
oklch(88.5% 0.016 266.3)
-
Step 300
300
#B7C1D4
oklch(80.9% 0.029 263.4)
-
Step 400
400
#92A1BE
oklch(70.7% 0.046 263.6)
-
Step 500
500
#778AAD
oklch(63.1% 0.057 262.5)
-
Step 600
600
#607399
oklch(55.5% 0.064 263.8)
-
Step 700
700
#506183
oklch(49.3% 0.059 263.8)
-
Step 800
800
#414F6A
oklch(42.7% 0.049 263.2)
-
Step 900
900 (this color)
#2D374B
oklch(33.7% 0.038 263.9)
-
Step 950
950
#202632
oklch(26.8% 0.024 264)
#2D374B 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) | #30384C | 0.006 |
| Deuteranopia (no green cones) | #2D364B | 0.003 |
| Tritanopia (no blue cones) | #243B3E | 0.033 |
| Achromatopsia (no color) | #373737 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D374B
#2D374B
oklch(33.7% 0.038 263.9)
- #403520
#403520
oklch(33.5% 0.037 82.9)
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 #2D374B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.021
- Gunmetal #293241 ΔE 0.023
- Onyx #343A40 ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.033
- Midnight Green #073B4C ΔE 0.038
- Charcoal #264653 ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.048
Use #2D374B 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.