#364A8A
Closest named color: Cobalt (#1E488F). oklch(42.7% 0.109 268.5), rgb(54, 74, 138).
Aa
White text reads best on this color (8.38:1).
About this color
#364A8A is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.109 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.028 away. White text reads best on it, at 8.38:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #364A8A |
| RGB | rgb(54, 74, 138) |
| HSL | hsl(226, 44%, 38%) |
| OKLCH | oklch(42.7% 0.109 268.5) |
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 #364A8A | 8.38:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #364A8A | 2.50:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #364A8A text on white | 8.38:1 | AAA | Lc 88.7 | Fine for body text |
| #364A8A text on black | 2.50:1 | Fails | Lc -13.5 | 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
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AFC0EB
oklch(80.9% 0.064 268.1)
-
Step 400
400
#869EE1
oklch(70.7% 0.102 268.6)
-
Step 500
500
#6885D8
oklch(63.2% 0.13 268)
-
Step 600
600
#516DC5
oklch(55.7% 0.14 268.3)
-
Step 700
700
#425AAB
oklch(49.1% 0.132 268.7)
-
Step 800
800 (this color)
#364A8A
oklch(42.7% 0.109 268.5)
-
Step 900
900
#2F3E6E
oklch(37.6% 0.085 269)
-
Step 950
950
#1B2541
oklch(27% 0.054 267.8)
#364A8A 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) | #2C518C | 0.021 |
| Deuteranopia (no green cones) | #204A89 | 0.024 |
| Tritanopia (no blue cones) | #005863 | 0.095 |
| Achromatopsia (no color) | #4D4D4D | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364A8A
#364A8A
oklch(42.7% 0.109 268.5)
- #624B00
#624B00
oklch(42.5% 0.087 88.4)
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 #364A8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.028
- Dusk Blue #26538D ΔE 0.028
- Light Navy #155084 ΔE 0.035
- Blueberry #464196 ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.041
- Twilight #4E518B ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.048
Use #364A8A 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.