#375E7C
Closest named color: YInMn Blue (#415A77). oklch(46.6% 0.066 243.1), rgb(55, 94, 124).
Aa
White text reads best on this color (6.87:1).
About this color
#375E7C is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.066 and its hue 243°. 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 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #375E7C |
| RGB | rgb(55, 94, 124) |
| HSL | hsl(206, 39%, 35%) |
| OKLCH | oklch(46.6% 0.066 243.1) |
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 #375E7C | 6.87:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #375E7C | 3.05:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #375E7C text on white | 6.87:1 | AA | Lc 83.6 | Fine for body text |
| #375E7C 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
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B0C4D4
oklch(81% 0.031 242.1)
-
Step 400
400
#85A5BE
oklch(70.7% 0.051 242)
-
Step 500
500
#668EAE
oklch(63% 0.066 243.2)
-
Step 600
600
#4D789A
oklch(55.5% 0.071 243.4)
-
Step 700
700 (this color)
#375E7C
oklch(46.6% 0.066 243.1)
-
Step 800
800
#33536B
oklch(42.8% 0.055 242.1)
-
Step 900
900
#2D4457
oklch(37.6% 0.044 244.2)
-
Step 950
950
#1B2833
oklch(27% 0.027 244.6)
#375E7C 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) | #515E7D | 0.033 |
| Deuteranopia (no green cones) | #48577B | 0.027 |
| Tritanopia (no blue cones) | #0B6568 | 0.055 |
| Achromatopsia (no color) | #5A5A5A | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375E7C
#375E7C
oklch(46.6% 0.066 243.1)
- #745131
#745131
oklch(46.5% 0.066 62.5)
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 #375E7C, 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 0.027
- Denim #3B638C ΔE 0.028
- Dusty Grape #545775 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.040
- Dusk #4E5481 ΔE 0.042
- Slate #516572 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.045
Use #375E7C 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.