#375F79
Closest named color: YInMn Blue (#415A77). oklch(46.7% 0.062 238.5), rgb(55, 95, 121).
Aa
White text reads best on this color (6.82:1).
About this color
#375F79 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.062 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.017 away. White text reads best on it, at 6.82:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #375F79 |
| RGB | rgb(55, 95, 121) |
| HSL | hsl(204, 37%, 35%) |
| OKLCH | oklch(46.7% 0.062 238.5) |
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 #375F79 | 6.82:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #375F79 | 3.07:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #375F79 text on white | 6.82:1 | AA | Lc 83.5 | Fine for body text |
| #375F79 text on black | 3.07:1 | AA large text | Lc -18.5 | 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 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
#85A5BC
oklch(70.6% 0.049 239.6)
-
Step 500
500
#668FAB
oklch(63.1% 0.062 238.9)
-
Step 600
600
#4D7996
oklch(55.6% 0.066 238.5)
-
Step 700
700 (this color)
#375F79
oklch(46.7% 0.062 238.5)
-
Step 800
800
#335368
oklch(42.7% 0.051 238.4)
-
Step 900
900
#2D4555
oklch(37.8% 0.04 238.4)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#375F79 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) | #535F7A | 0.035 |
| Deuteranopia (no green cones) | #4A5879 | 0.029 |
| Tritanopia (no blue cones) | #106668 | 0.050 |
| Achromatopsia (no color) | #5B5B5B | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375F79
#375F79
oklch(46.7% 0.062 238.5)
- #745136
#745136
oklch(46.6% 0.062 58.2)
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 #375F79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.017
- Denim #3B638C ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.034
- Dusty Grape #545775 ΔE 0.041
- Slate #516572 ΔE 0.041
- Petrol #005F6A ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.046
- Dusk #4E5481 ΔE 0.047
Use #375F79 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.