#363D5E
Closest named color: Dark Grey Blue (#29465B). oklch(36.9% 0.058 274.1), rgb(54, 61, 94).
Aa
White text reads best on this color (10.57:1).
About this color
#363D5E is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.058 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.033 away. White text reads best on it, at 10.57:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.57:1 |
Values
| HEX | #363D5E |
| RGB | rgb(54, 61, 94) |
| HSL | hsl(230, 27%, 29%) |
| OKLCH | oklch(36.9% 0.058 274.1) |
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 #363D5E | 10.57:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #363D5E | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #363D5E text on white | 10.57:1 | AAA | Lc 94.5 | Preferred for body text |
| #363D5E text on black | 1.98:1 | Fails | Lc -8.1 | 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 900.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8EA
oklch(88.5% 0.025 275.9)
-
Step 300
300
#B8BFDD
oklch(80.9% 0.043 275)
-
Step 400
400
#939ECC
oklch(70.7% 0.069 274.1)
-
Step 500
500
#7985BF
oklch(63% 0.089 274.6)
-
Step 600
600
#626EAB
oklch(55.5% 0.096 274.4)
-
Step 700
700
#515C93
oklch(49% 0.089 274.1)
-
Step 800
800
#424B77
oklch(42.5% 0.074 274.1)
-
Step 900
900 (this color)
#363D5E
oklch(36.9% 0.058 274.1)
-
Step 950
950
#212538
oklch(27% 0.036 274.6)
#363D5E 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) | #32405F | 0.010 |
| Deuteranopia (no green cones) | #2F3D5D | 0.011 |
| Tritanopia (no blue cones) | #2A4449 | 0.052 |
| Achromatopsia (no color) | #3F3F3F | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363D5E
#363D5E
oklch(36.9% 0.058 274.1)
- #493F18
#493F18
oklch(36.9% 0.058 95)
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 #363D5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal #264653 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.046
- Onyx #343A40 ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.055
- Twilight Blue #0A437A ΔE 0.060
- Marine Blue #01386A ΔE 0.060
Use #363D5E 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.