#375F80
Closest named color: YInMn Blue (#415A77). oklch(47.1% 0.07 245), rgb(55, 95, 128).
Aa
White text reads best on this color (6.75:1).
About this color
#375F80 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.070 and its hue 245°. 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 6.75:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.11:1 |
| White text | 6.75:1 |
Values
| HEX | #375F80 |
| RGB | rgb(55, 95, 128) |
| HSL | hsl(207, 40%, 36%) |
| OKLCH | oklch(47.1% 0.07 245) |
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 #375F80 | 6.75:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #375F80 | 3.11:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #375F80 text on white | 6.75:1 | AA | Lc 83.1 | Fine for body text |
| #375F80 text on black | 3.11:1 | AA large text | Lc -18.8 | 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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AFC3D6
oklch(80.8% 0.035 246.9)
-
Step 400
400
#85A5C1
oklch(70.8% 0.054 245.1)
-
Step 500
500
#658EB1
oklch(63% 0.07 245)
-
Step 600
600
#4C789D
oklch(55.6% 0.076 245.1)
-
Step 700
700 (this color)
#375F80
oklch(47.1% 0.07 245)
-
Step 800
800
#32526D
oklch(42.6% 0.059 245.2)
-
Step 900
900
#2D4458
oklch(37.7% 0.045 245.6)
-
Step 950
950
#1A2834
oklch(27% 0.03 245.1)
#375F80 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) | #516082 | 0.033 |
| Deuteranopia (no green cones) | #47587F | 0.026 |
| Tritanopia (no blue cones) | #02676A | 0.060 |
| Achromatopsia (no color) | #5B5B5B | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375F80
#375F80
oklch(47.1% 0.07 245)
- #76522E
#76522E
oklch(46.9% 0.07 64.6)
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 #375F80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.020
- Denim #3B638C ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.025
- Denim Blue #3B5B92 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.039
- Dusk #4E5481 ΔE 0.041
- Dusty Grape #545775 ΔE 0.041
- Peacock Blue #016795 ΔE 0.042
Use #375F80 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.