#375367
Closest named color: YInMn Blue (#415A77). oklch(42.9% 0.047 240.3), rgb(55, 83, 103).
Aa
White text reads best on this color (8.09:1).
About this color
#375367 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.047 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.034 away. White text reads best on it, at 8.09:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.59:1 |
| White text | 8.09:1 |
Values
| HEX | #375367 |
| RGB | rgb(55, 83, 103) |
| HSL | hsl(205, 30%, 31%) |
| OKLCH | oklch(42.9% 0.047 240.3) |
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 #375367 | 8.09:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #375367 | 2.59:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #375367 text on white | 8.09:1 | AAA | Lc 88.0 | Fine for body text |
| #375367 text on black | 2.59:1 | Fails | Lc -14.2 | 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 800.
-
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
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B1C3D1
oklch(80.8% 0.028 241.2)
-
Step 400
400
#88A5BA
oklch(70.7% 0.045 239.7)
-
Step 500
500
#6A8EA9
oklch(63% 0.057 241.2)
-
Step 600
600
#527894
oklch(55.5% 0.061 241.1)
-
Step 700
700
#42657E
oklch(49.1% 0.057 240.5)
-
Step 800
800 (this color)
#375367
oklch(42.9% 0.047 240.3)
-
Step 900
900
#2F4453
oklch(37.6% 0.037 240.1)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#375367 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) | #4A5368 | 0.026 |
| Deuteranopia (no green cones) | #444E67 | 0.022 |
| Tritanopia (no blue cones) | #23585A | 0.038 |
| Achromatopsia (no color) | #505050 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375367
#375367
oklch(42.9% 0.047 240.3)
- #634935
#634935
oklch(42.8% 0.047 58.6)
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 #375367, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.042
- Petrol #005F6A ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- Deep Teal #00555A ΔE 0.048
- Dusty Grape #545775 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.054
- Charcoal #264653 ΔE 0.055
Use #375367 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.