#375A6E
Closest named color: YInMn Blue (#415A77). oklch(44.9% 0.052 234.7), rgb(55, 90, 110).
Aa
White text reads best on this color (7.36:1).
About this color
#375A6E is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.052 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.020 away. White text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #375A6E |
| RGB | rgb(55, 90, 110) |
| HSL | hsl(202, 33%, 32%) |
| OKLCH | oklch(44.9% 0.052 234.7) |
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 #375A6E | 7.36:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #375A6E | 2.85:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #375A6E text on white | 7.36:1 | AAA | Lc 85.5 | Fine for body text |
| #375A6E text on black | 2.85:1 | Fails | Lc -16.5 | Dividers and decoration only |
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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AEC4D2
oklch(80.8% 0.031 235.7)
-
Step 400
400
#83A6BB
oklch(70.6% 0.049 234.7)
-
Step 500
500
#6490AA
oklch(63.1% 0.062 235)
-
Step 600
600
#4A7A95
oklch(55.6% 0.067 234.4)
-
Step 700
700
#3B677F
oklch(49.2% 0.062 233.8)
-
Step 800
800 (this color)
#375A6E
oklch(44.9% 0.052 234.7)
-
Step 900
900
#2B4554
oklch(37.6% 0.041 234.7)
-
Step 950
950
#1A2931
oklch(27.1% 0.025 232.2)
#375A6E 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) | #51596F | 0.034 |
| Deuteranopia (no green cones) | #49536E | 0.030 |
| Tritanopia (no blue cones) | #1D5F61 | 0.039 |
| Achromatopsia (no color) | #565656 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375A6E
#375A6E
oklch(44.9% 0.052 234.7)
- #6C4D39
#6C4D39
oklch(44.9% 0.052 53.8)
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 #375A6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.020
- Petrol #005F6A ΔE 0.038
- Dusty Grape #545775 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.044
- Slate #516572 ΔE 0.050
- Dusk #4E5481 ΔE 0.051
- Denim #3B638C ΔE 0.051
- Dark Aqua #05696B ΔE 0.055
Use #375A6E 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.