#2D374E
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.8% 0.043 266), rgb(45, 55, 78).
Aa
White text reads best on this color (11.87:1).
About this color
#2D374E is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.043 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.022 away. White text reads best on it, at 11.87:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.76:1 |
| White text | 11.87:1 |
Values
| HEX | #2D374E |
| RGB | rgb(45, 55, 78) |
| HSL | hsl(222, 27%, 24%) |
| OKLCH | oklch(33.8% 0.043 266) |
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 #2D374E | 11.87:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #2D374E | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #2D374E text on white | 11.87:1 | AAA | Lc 97.2 | Preferred for body text |
| #2D374E text on black | 1.76:1 | 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
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D3D9E5
oklch(88.4% 0.018 264.5)
-
Step 300
300
#B7C1D6
oklch(81% 0.032 265.3)
-
Step 400
400
#92A0C2
oklch(70.7% 0.052 267.5)
-
Step 500
500
#7789B2
oklch(63.1% 0.066 266.1)
-
Step 600
600
#60729E
oklch(55.5% 0.072 266.9)
-
Step 700
700
#4F6087
oklch(49.2% 0.066 265.9)
-
Step 800
800
#414E6E
oklch(42.7% 0.056 267)
-
Step 900
900 (this color)
#2D374E
oklch(33.8% 0.043 266)
-
Step 950
950
#202634
oklch(26.9% 0.028 266.5)
#2D374E 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) | #2F394F | 0.007 |
| Deuteranopia (no green cones) | #2C364D | 0.004 |
| Tritanopia (no blue cones) | #223C3F | 0.039 |
| Achromatopsia (no color) | #373737 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D374E
#2D374E
oklch(33.8% 0.043 266)
- #41361C
#41361C
oklch(33.8% 0.043 87.2)
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 #2D374E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.022
- Gunmetal #293241 ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.028
- Onyx #343A40 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.035
- Midnight Green #073B4C ΔE 0.039
- Charcoal #264653 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
Use #2D374E 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.