#37467F
Closest named color: Cobalt (#1E488F). oklch(41.1% 0.097 270.5), rgb(55, 70, 127).
Aa
White text reads best on this color (8.95:1).
About this color
#37467F is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.097 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.036 away. White text reads best on it, at 8.95:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #37467F |
| RGB | rgb(55, 70, 127) |
| HSL | hsl(228, 40%, 36%) |
| OKLCH | oklch(41.1% 0.097 270.5) |
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 #37467F | 8.95:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #37467F | 2.34:1 | Fails | Lc 13.6 | Not readable |
| #37467F text on white | 8.95:1 | AAA | Lc 90.4 | Preferred for body text |
| #37467F text on black | 2.34:1 | Fails | Lc -11.9 | Not readable |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D1D9EF
oklch(88.6% 0.031 269.8)
-
Step 300
300
#B2BFE6
oklch(80.8% 0.057 270.6)
-
Step 400
400
#8B9EDA
oklch(70.7% 0.091 270.5)
-
Step 500
500
#6F85D0
oklch(63.2% 0.116 270.4)
-
Step 600
600
#586DBD
oklch(55.6% 0.127 270.7)
-
Step 700
700
#485BA3
oklch(49.2% 0.117 270.5)
-
Step 800
800 (this color)
#37467F
oklch(41.1% 0.097 270.5)
-
Step 900
900
#323F6A
oklch(37.8% 0.076 269.8)
-
Step 950
950
#1E253E
oklch(27.1% 0.048 271.1)
#37467F 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) | #2E4D81 | 0.021 |
| Deuteranopia (no green cones) | #25467E | 0.022 |
| Tritanopia (no blue cones) | #10525C | 0.086 |
| Achromatopsia (no color) | #494949 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37467F
#37467F
oklch(41.1% 0.097 270.5)
- #5C4800
#5C4800
oklch(41.1% 0.084 90.5)
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 #37467F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.036
- Light Navy #155084 ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.041
- Dusk Blue #26538D ΔE 0.041
- Twilight Blue #0A437A ΔE 0.045
- Blueberry #464196 ΔE 0.047
- Twilight #4E518B ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.051
Use #37467F 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.