#375266
Closest named color: YInMn Blue (#415A77). oklch(42.6% 0.047 241.3), rgb(55, 82, 102).
Aa
White text reads best on this color (8.19:1).
About this color
#375266 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.047 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.037 away. White text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #375266 |
| RGB | rgb(55, 82, 102) |
| HSL | hsl(206, 30%, 31%) |
| OKLCH | oklch(42.6% 0.047 241.3) |
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 #375266 | 8.19:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #375266 | 2.56:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #375266 text on white | 8.19:1 | AAA | Lc 88.3 | Fine for body text |
| #375266 text on black | 2.56:1 | Fails | Lc -13.9 | 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
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B2C3D1
oklch(80.9% 0.027 242.8)
-
Step 400
400
#89A5BA
oklch(70.8% 0.044 240.7)
-
Step 500
500
#6B8EA9
oklch(63.1% 0.057 241.9)
-
Step 600
600
#537894
oklch(55.6% 0.061 241.8)
-
Step 700
700
#43657E
oklch(49.1% 0.056 241.2)
-
Step 800
800 (this color)
#375266
oklch(42.6% 0.047 241.3)
-
Step 900
900
#304453
oklch(37.6% 0.036 241.3)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#375266 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) | #495267 | 0.025 |
| Deuteranopia (no green cones) | #434D66 | 0.021 |
| Tritanopia (no blue cones) | #245759 | 0.037 |
| Achromatopsia (no color) | #4F4F4F | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375266
#375266
oklch(42.6% 0.047 241.3)
- #614934
#614934
oklch(42.5% 0.046 62.3)
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 #375266, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.045
- Deep Teal #00555A ΔE 0.048
- Petrol #005F6A ΔE 0.049
- Dusty Grape #545775 ΔE 0.051
- Charcoal #264653 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.056
Use #375266 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.