#375E79
Closest named color: YInMn Blue (#415A77). oklch(46.5% 0.062 240.2), rgb(55, 94, 121).
Aa
White text reads best on this color (6.90:1).
About this color
#375E79 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.062 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.015 away. White text reads best on it, at 6.90:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.03:1 |
| White text | 6.90:1 |
Values
| HEX | #375E79 |
| RGB | rgb(55, 94, 121) |
| HSL | hsl(205, 37%, 35%) |
| OKLCH | oklch(46.5% 0.062 240.2) |
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 #375E79 | 6.90:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #375E79 | 3.03:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #375E79 text on white | 6.90:1 | AA | Lc 83.8 | Fine for body text |
| #375E79 text on black | 3.03:1 | AA large text | Lc -18.2 | 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
#B0C4D3
oklch(81% 0.03 240.3)
-
Step 400
400
#86A5BC
oklch(70.7% 0.048 240.5)
-
Step 500
500
#678FAC
oklch(63.2% 0.062 240.5)
-
Step 600
600
#4E7997
oklch(55.7% 0.067 240)
-
Step 700
700 (this color)
#375E79
oklch(46.5% 0.062 240.2)
-
Step 800
800
#345369
oklch(42.8% 0.052 240.4)
-
Step 900
900
#2D4555
oklch(37.8% 0.04 238.4)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#375E79 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) | #525E7A | 0.034 |
| Deuteranopia (no green cones) | #495779 | 0.029 |
| Tritanopia (no blue cones) | #106567 | 0.051 |
| Achromatopsia (no color) | #5A5A5A | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375E79
#375E79
oklch(46.5% 0.062 240.2)
- #735134
#735134
oklch(46.5% 0.063 60.8)
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 #375E79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.015
- Light Navy Blue #2E5A88 ΔE 0.032
- Denim #3B638C ΔE 0.032
- Dusty Grape #545775 ΔE 0.040
- Slate #516572 ΔE 0.043
- Dusk #4E5481 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.045
- Petrol #005F6A ΔE 0.045
Use #375E79 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.