#375368
Closest named color: YInMn Blue (#415A77). oklch(42.9% 0.049 241.7), rgb(55, 83, 104).
Aa
White text reads best on this color (8.07:1).
About this color
#375368 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.049 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.033 away. White text reads best on it, at 8.07:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.59:1 |
| White text | 8.07:1 |
Values
| HEX | #375368 |
| RGB | rgb(55, 83, 104) |
| HSL | hsl(206, 31%, 31%) |
| OKLCH | oklch(42.9% 0.049 241.7) |
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 #375368 | 8.07:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #375368 | 2.59:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #375368 text on white | 8.07:1 | AAA | Lc 87.9 | Fine for body text |
| #375368 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
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D2
oklch(80.8% 0.029 243.2)
-
Step 400
400
#88A5BB
oklch(70.8% 0.046 241)
-
Step 500
500
#6A8EAA
oklch(63% 0.058 242.2)
-
Step 600
600
#517895
oklch(55.5% 0.063 241.5)
-
Step 700
700
#42657F
oklch(49.1% 0.058 241.6)
-
Step 800
800 (this color)
#375368
oklch(42.9% 0.049 241.7)
-
Step 900
900
#2F4454
oklch(37.6% 0.038 241.8)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#375368 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) | #4A5369 | 0.026 |
| Deuteranopia (no green cones) | #434E68 | 0.021 |
| Tritanopia (no blue cones) | #23585A | 0.039 |
| Achromatopsia (no color) | #505050 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375368
#375368
oklch(42.9% 0.049 241.7)
- #634A34
#634A34
oklch(43% 0.048 62.4)
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 #375368, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.044
- Petrol #005F6A ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- Dusty Grape #545775 ΔE 0.049
- Deep Teal #00555A ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
Use #375368 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.