#375373
Closest named color: YInMn Blue (#415A77). oklch(43.5% 0.063 252.5), rgb(55, 83, 115).
Aa
White text reads best on this color (7.93:1).
About this color
#375373 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.063 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.026 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #375373 |
| RGB | rgb(55, 83, 115) |
| HSL | hsl(212, 35%, 33%) |
| OKLCH | oklch(43.5% 0.063 252.5) |
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 #375373 | 7.93:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #375373 | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #375373 text on white | 7.93:1 | AAA | Lc 87.4 | Fine for body text |
| #375373 text on black | 2.64:1 | Fails | Lc -14.7 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE7
oklch(88.5% 0.021 254.9)
-
Step 300
300
#B0C3D8
oklch(80.9% 0.036 250.9)
-
Step 400
400
#87A3C5
oklch(70.6% 0.059 253.5)
-
Step 500
500
#688CB6
oklch(63% 0.075 252.8)
-
Step 600
600
#4F76A2
oklch(55.6% 0.082 252.3)
-
Step 700
700
#40638B
oklch(49.1% 0.076 252.6)
-
Step 800
800 (this color)
#375373
oklch(43.5% 0.063 252.5)
-
Step 900
900
#2E435B
oklch(37.6% 0.049 252.4)
-
Step 950
950
#1B2735
oklch(26.8% 0.031 252.8)
#375373 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) | #465474 | 0.020 |
| Deuteranopia (no green cones) | #3F4E72 | 0.017 |
| Tritanopia (no blue cones) | #1B5A5E | 0.055 |
| Achromatopsia (no color) | #515151 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375373
#375373
oklch(43.5% 0.063 252.5)
- #664B27
#664B27
oklch(43.4% 0.063 72.7)
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 #375373, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.036
- Dusk #4E5481 ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.042
- Light Navy #155084 ΔE 0.043
- Dusty Grape #545775 ΔE 0.044
- Dusk Blue #26538D ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.053
Use #375373 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.