#36427F
Closest named color: Cobalt (#1E488F). oklch(40.1% 0.103 272.6), rgb(54, 66, 127).
Aa
White text reads best on this color (9.36:1).
About this color
#36427F is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.103 and its hue 273°. 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 9.36:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.24:1 |
| White text | 9.36:1 |
Values
| HEX | #36427F |
| RGB | rgb(54, 66, 127) |
| HSL | hsl(230, 40%, 35%) |
| OKLCH | oklch(40.1% 0.103 272.6) |
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 #36427F | 9.36:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #36427F | 2.24:1 | Fails | Lc 12.5 | Not readable |
| #36427F text on white | 9.36:1 | AAA | Lc 91.5 | Preferred for body text |
| #36427F text on black | 2.24:1 | Fails | Lc -10.9 | 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 900.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CFD8F6
oklch(88.5% 0.042 272.3)
-
Step 300
300
#AFBEF3
oklch(80.9% 0.077 272.3)
-
Step 400
400
#879BEE
oklch(70.8% 0.124 272.6)
-
Step 500
500
#6A7FE8
oklch(63% 0.159 272.6)
-
Step 600
600
#5466D6
oklch(55.6% 0.172 272.7)
-
Step 700
700
#4554BA
oklch(49.2% 0.16 272.8)
-
Step 800
800
#384596
oklch(42.6% 0.133 272.6)
-
Step 900
900 (this color)
#36427F
oklch(40.1% 0.103 272.6)
-
Step 950
950
#1C2346
oklch(27% 0.065 272.8)
#36427F 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) | #264A81 | 0.027 |
| Deuteranopia (no green cones) | #1D447E | 0.028 |
| Tritanopia (no blue cones) | #0D4F5A | 0.091 |
| Achromatopsia (no color) | #474747 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #36427F
#36427F
oklch(40.1% 0.103 272.6)
- #584600
#584600
oklch(40.2% 0.082 92)
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 #36427F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.037
- Twilight Blue #0A437A ΔE 0.042
- Blueberry #464196 ΔE 0.046
- Light Navy #155084 ΔE 0.046
- Dusk Blue #26538D ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.059
- Twilight #4E518B ΔE 0.060
Use #36427F 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.