#375F75
Closest named color: YInMn Blue (#415A77). oklch(46.5% 0.058 234), rgb(55, 95, 117).
Aa
White text reads best on this color (6.87:1).
About this color
#375F75 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.058 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.019 away. White text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #375F75 |
| RGB | rgb(55, 95, 117) |
| HSL | hsl(201, 36%, 34%) |
| OKLCH | oklch(46.5% 0.058 234) |
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 #375F75 | 6.87:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #375F75 | 3.05:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #375F75 text on white | 6.87:1 | AA | Lc 83.6 | Fine for body text |
| #375F75 text on black | 3.05:1 | AA large text | Lc -18.3 | 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
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B0C4D0
oklch(80.9% 0.028 234.1)
-
Step 400
400
#86A6B9
oklch(70.8% 0.045 234.3)
-
Step 500
500
#6790A7
oklch(63.2% 0.057 233.4)
-
Step 600
600
#4D7A92
oklch(55.7% 0.062 232.7)
-
Step 700
700 (this color)
#375F75
oklch(46.5% 0.058 234)
-
Step 800
800
#345365
oklch(42.6% 0.047 234.9)
-
Step 900
900
#2D4552
oklch(37.6% 0.037 232.7)
-
Step 950
950
#1B2830
oklch(26.9% 0.023 235.8)
#375F75 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) | #555E76 | 0.038 |
| Deuteranopia (no green cones) | #4C5775 | 0.034 |
| Tritanopia (no blue cones) | #156566 | 0.044 |
| Achromatopsia (no color) | #5A5A5A | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375F75
#375F75
oklch(46.5% 0.058 234)
- #73513A
#73513A
oklch(46.6% 0.058 54.9)
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 #375F75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.019
- Denim #3B638C ΔE 0.038
- Slate #516572 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.040
- Petrol #005F6A ΔE 0.041
- Dusty Grape #545775 ΔE 0.042
- Dark Aqua #05696B ΔE 0.048
- Dusk #4E5481 ΔE 0.051
Use #375F75 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.