#2D374F
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.9% 0.045 266.6), rgb(45, 55, 79).
Aa
White text reads best on this color (11.85:1).
About this color
#2D374F is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.045 and its hue 267°. 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 11.85:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.77:1 |
| White text | 11.85:1 |
Values
| HEX | #2D374F |
| RGB | rgb(45, 55, 79) |
| HSL | hsl(222, 27%, 24%) |
| OKLCH | oklch(33.9% 0.045 266.6) |
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 #2D374F | 11.85:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #2D374F | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #2D374F text on white | 11.85:1 | AAA | Lc 97.2 | Preferred for body text |
| #2D374F text on black | 1.77:1 | 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
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B7C1D7
oklch(81% 0.033 266.1)
-
Step 400
400
#91A0C3
oklch(70.6% 0.054 266.8)
-
Step 500
500
#7689B4
oklch(63.1% 0.069 266)
-
Step 600
600
#5F729F
oklch(55.5% 0.074 266.4)
-
Step 700
700
#4F6088
oklch(49.2% 0.068 266.3)
-
Step 800
800
#414E6F
oklch(42.7% 0.058 267.4)
-
Step 900
900 (this color)
#2D374F
oklch(33.9% 0.045 266.6)
-
Step 950
950
#202635
oklch(27% 0.029 267.5)
#2D374F 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) | #2F3950 | 0.007 |
| Deuteranopia (no green cones) | #2C364E | 0.004 |
| Tritanopia (no blue cones) | #223C3F | 0.041 |
| Achromatopsia (no color) | #373737 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D374F
#2D374F
oklch(33.9% 0.045 266.6)
- #42361B
#42361B
oklch(33.9% 0.045 86)
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 #2D374F, 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
- Prussian Blue #1D3557 ΔE 0.027
- Gunmetal #293241 ΔE 0.028
- Onyx #343A40 ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.036
- Midnight Green #073B4C ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.047
- Charcoal #264653 ΔE 0.048
Use #2D374F 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.