#37769E
Closest named color: Muted Blue (#3B719F). oklch(54.2% 0.09 239.3), rgb(55, 118, 158).
Aa
White text reads best on this color (4.94:1).
About this color
#37769E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.090 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.015 away. White text reads best on it, at 4.94:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #37769E |
| RGB | rgb(55, 118, 158) |
| HSL | hsl(203, 48%, 42%) |
| OKLCH | oklch(54.2% 0.09 239.3) |
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 #37769E | 4.94:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #37769E | 4.24:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #37769E text on white | 4.94:1 | AA | Lc 74.0 | Content text, not long reading |
| #37769E text on black | 4.24:1 | AA large text | Lc -27.7 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#AAC5D8
oklch(80.9% 0.04 238.7)
-
Step 400
400
#7BA7C5
oklch(70.8% 0.065 238.7)
-
Step 500
500
#5890B6
oklch(63% 0.082 239.6)
-
Step 600
600 (this color)
#37769E
oklch(54.2% 0.09 239.3)
-
Step 700
700
#2D678B
oklch(49.2% 0.083 238.9)
-
Step 800
800
#275471
oklch(42.8% 0.069 239.4)
-
Step 900
900
#24455B
oklch(37.6% 0.054 239.6)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#37769E 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) | #6476A0 | 0.050 |
| Deuteranopia (no green cones) | #566C9D | 0.040 |
| Tritanopia (no blue cones) | #008084 | 0.064 |
| Achromatopsia (no color) | #707070 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37769E
#37769E
oklch(54.2% 0.09 239.3)
- #966236
#966236
oklch(54.3% 0.09 59.4)
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 #37769E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.015
- Dull Blue #49759C ΔE 0.017
- Flat Blue #3C73A8 ΔE 0.021
- Cerulean #457B9D ΔE 0.021
- Stormy Blue #507B9C ΔE 0.031
- Sea Blue #047495 ΔE 0.031
- Metallic Blue #4F738E ΔE 0.031
- Nice Blue #107AB0 ΔE 0.032
Use #37769E 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.