#37677E
Closest named color: Denim (#3B638C). oklch(49% 0.064 230.8), rgb(55, 103, 126).
Aa
White text reads best on this color (6.16:1).
About this color
#37677E is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.064 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.029 away. White text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #37677E |
| RGB | rgb(55, 103, 126) |
| HSL | hsl(199, 39%, 35%) |
| OKLCH | oklch(49% 0.064 230.8) |
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 #37677E | 6.16:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #37677E | 3.40:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #37677E text on white | 6.16:1 | AA | Lc 80.6 | Fine for body text |
| #37677E text on black | 3.40:1 | AA large text | Lc -21.2 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDBE2
oklch(88.4% 0.017 230.9)
-
Step 300
300
#ADC5D1
oklch(80.9% 0.031 229.3)
-
Step 400
400
#82A7BA
oklch(70.8% 0.049 230.6)
-
Step 500
500
#6191A9
oklch(63.1% 0.063 230.7)
-
Step 600
600
#467B94
oklch(55.6% 0.069 230.1)
-
Step 700
700 (this color)
#37677E
oklch(49% 0.064 230.8)
-
Step 800
800
#2E5467
oklch(42.6% 0.054 231.6)
-
Step 900
900
#2A4654
oklch(37.8% 0.041 231)
-
Step 950
950
#192931
oklch(27% 0.026 230.6)
#37677E 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) | #5C667F | 0.045 |
| Deuteranopia (no green cones) | #515E7E | 0.039 |
| Tritanopia (no blue cones) | #016D6E | 0.048 |
| Achromatopsia (no color) | #616161 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37677E
#37677E
oklch(49% 0.064 230.8)
- #7E563F
#7E563F
oklch(49.1% 0.064 50.6)
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 #37677E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.029
- Slate #516572 ΔE 0.033
- YInMn Blue #415A77 ΔE 0.038
- Peacock Blue #016795 ΔE 0.045
- Dark Aqua #05696B ΔE 0.047
- Sea Blue #047495 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.049
- Metallic Blue #4F738E ΔE 0.051
Use #37677E 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.