#37568E
Closest named color: Denim Blue (#3B5B92). oklch(45.7% 0.099 261.4), rgb(55, 86, 142).
Aa
White text reads best on this color (7.28:1).
About this color
#37568E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.099 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.016 away. White text reads best on it, at 7.28:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #37568E |
| RGB | rgb(55, 86, 142) |
| HSL | hsl(219, 44%, 39%) |
| OKLCH | oklch(45.7% 0.099 261.4) |
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 #37568E | 7.28:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #37568E | 2.88:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #37568E text on white | 7.28:1 | AAA | Lc 85.1 | Fine for body text |
| #37568E text on black | 2.88:1 | Fails | Lc -16.9 | 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 800.
-
Step 50
50
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#ACC2E7
oklch(81% 0.058 260.8)
-
Step 400
400
#80A1DB
oklch(70.7% 0.093 261.4)
-
Step 500
500
#6089D1
oklch(63.2% 0.118 261.1)
-
Step 600
600
#4771BE
oklch(55.6% 0.129 261.5)
-
Step 700
700
#385FA4
oklch(49.2% 0.119 261)
-
Step 800
800 (this color)
#37568E
oklch(45.7% 0.099 261.4)
-
Step 900
900
#2A416A
oklch(37.7% 0.076 261.3)
-
Step 950
950
#19263E
oklch(27% 0.049 262)
#37568E 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) | #3E5B90 | 0.018 |
| Deuteranopia (no green cones) | #32538D | 0.011 |
| Tritanopia (no blue cones) | #00636B | 0.086 |
| Achromatopsia (no color) | #575757 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37568E
#37568E
oklch(45.7% 0.099 261.4)
- #725100
#725100
oklch(45.8% 0.095 81.4)
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 #37568E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.016
- Light Navy Blue #2E5A88 ΔE 0.019
- Dusk Blue #26538D ΔE 0.021
- Twilight #4E518B ΔE 0.031
- Dusk #4E5481 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.035
- Denim #3B638C ΔE 0.041
- Light Navy #155084 ΔE 0.041
Use #37568E 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.