#375E77
Closest named color: YInMn Blue (#415A77). oklch(46.4% 0.06 238.1), rgb(55, 94, 119).
Aa
White text reads best on this color (6.93:1).
About this color
#375E77 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.060 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.016 away. White text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #375E77 |
| RGB | rgb(55, 94, 119) |
| HSL | hsl(203, 37%, 34%) |
| OKLCH | oklch(46.4% 0.06 238.1) |
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 #375E77 | 6.93:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #375E77 | 3.02:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #375E77 text on white | 6.93:1 | AA | Lc 83.9 | Fine for body text |
| #375E77 text on black | 3.02:1 | AA large text | Lc -18.1 | 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
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B0C4D2
oklch(81% 0.029 238.3)
-
Step 400
400
#86A5BB
oklch(70.6% 0.047 239.2)
-
Step 500
500
#678FAA
oklch(63.1% 0.06 238.5)
-
Step 600
600
#4E7995
oklch(55.6% 0.065 238.1)
-
Step 700
700 (this color)
#375E77
oklch(46.4% 0.06 238.1)
-
Step 800
800
#345367
oklch(42.7% 0.05 237.8)
-
Step 900
900
#2E4554
oklch(37.8% 0.038 237.7)
-
Step 950
950
#1B2831
oklch(26.9% 0.025 239.1)
#375E77 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) | #535D78 | 0.036 |
| Deuteranopia (no green cones) | #4A5777 | 0.030 |
| Tritanopia (no blue cones) | #136466 | 0.048 |
| Achromatopsia (no color) | #5A5A5A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375E77
#375E77
oklch(46.4% 0.06 238.1)
- #735136
#735136
oklch(46.5% 0.061 59)
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 #375E77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.016
- Light Navy Blue #2E5A88 ΔE 0.035
- Denim #3B638C ΔE 0.035
- Dusty Grape #545775 ΔE 0.040
- Slate #516572 ΔE 0.042
- Petrol #005F6A ΔE 0.043
- Dusk #4E5481 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.048
Use #375E77 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.