#37607C
Closest named color: YInMn Blue (#415A77). oklch(47.1% 0.065 240), rgb(55, 96, 124).
Aa
White text reads best on this color (6.71:1).
About this color
#37607C is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.065 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.019 away. White text reads best on it, at 6.71:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.12:1 |
| White text | 6.71:1 |
Values
| HEX | #37607C |
| RGB | rgb(55, 96, 124) |
| HSL | hsl(204, 39%, 35%) |
| OKLCH | oklch(47.1% 0.065 240) |
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 #37607C | 6.71:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #37607C | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #37607C text on white | 6.71:1 | AA | Lc 83.0 | Fine for body text |
| #37607C text on black | 3.12:1 | AA large text | Lc -18.9 | 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
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AFC4D3
oklch(80.9% 0.031 238.9)
-
Step 400
400
#85A5BD
oklch(70.6% 0.05 240.8)
-
Step 500
500
#658FAD
oklch(63.1% 0.065 240.1)
-
Step 600
600
#4C7998
oklch(55.6% 0.069 239.8)
-
Step 700
700 (this color)
#37607C
oklch(47.1% 0.065 240)
-
Step 800
800
#32536A
oklch(42.7% 0.054 240.2)
-
Step 900
900
#2D4556
oklch(37.8% 0.042 240.1)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#37607C 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) | #54607D | 0.036 |
| Deuteranopia (no green cones) | #4A597C | 0.029 |
| Tritanopia (no blue cones) | #0A6769 | 0.053 |
| Achromatopsia (no color) | #5C5C5C | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37607C
#37607C
oklch(47.1% 0.065 240)
- #765235
#765235
oklch(47.1% 0.064 59.2)
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 #37607C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.019
- Denim #3B638C ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.032
- Slate #516572 ΔE 0.041
- Dusty Grape #545775 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.043
- Peacock Blue #016795 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.046
Use #37607C 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.