#37607F
Closest named color: YInMn Blue (#415A77). oklch(47.3% 0.068 242.7), rgb(55, 96, 127).
Aa
White text reads best on this color (6.68:1).
About this color
#37607F is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.068 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.021 away. White text reads best on it, at 6.68:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #37607F |
| RGB | rgb(55, 96, 127) |
| HSL | hsl(206, 40%, 36%) |
| OKLCH | oklch(47.3% 0.068 242.7) |
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 #37607F | 6.68:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #37607F | 3.14:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #37607F text on white | 6.68:1 | AA | Lc 82.9 | Fine for body text |
| #37607F text on black | 3.14:1 | AA large text | Lc -19.1 | 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
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AFC4D5
oklch(81% 0.033 242.4)
-
Step 400
400
#84A5BF
oklch(70.6% 0.053 242.2)
-
Step 500
500
#658FAF
oklch(63.2% 0.067 241.9)
-
Step 600
600
#4B789B
oklch(55.5% 0.074 243.1)
-
Step 700
700 (this color)
#37607F
oklch(47.3% 0.068 242.7)
-
Step 800
800
#32536C
oklch(42.8% 0.057 242.4)
-
Step 900
900
#2C4457
oklch(37.5% 0.044 243.2)
-
Step 950
950
#1A2833
oklch(26.9% 0.028 242.7)
#37607F 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) | #536080 | 0.035 |
| Deuteranopia (no green cones) | #49597E | 0.028 |
| Tritanopia (no blue cones) | #03686A | 0.058 |
| Achromatopsia (no color) | #5C5C5C | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37607F
#37607F
oklch(47.3% 0.068 242.7)
- #775331
#775331
oklch(47.3% 0.068 63.3)
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 #37607F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.021
- Denim #3B638C ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.041
- Dusty Grape #545775 ΔE 0.042
- Peacock Blue #016795 ΔE 0.043
- Slate #516572 ΔE 0.043
Use #37607F 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.