#2C538E
Closest named color: Dusk Blue (#26538D). oklch(44.5% 0.107 258.5), rgb(44, 83, 142).
Aa
White text reads best on this color (7.67:1).
About this color
#2C538E is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.107 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.006 away. White text reads best on it, at 7.67:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #2C538E |
| RGB | rgb(44, 83, 142) |
| HSL | hsl(216, 53%, 36%) |
| OKLCH | oklch(44.5% 0.107 258.5) |
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 #2C538E | 7.67:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #2C538E | 2.73:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #2C538E text on white | 7.67:1 | AAA | Lc 86.4 | Fine for body text |
| #2C538E text on black | 2.73:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A8C2EA
oklch(80.8% 0.064 258.9)
-
Step 400
400
#7AA2DF
oklch(70.7% 0.1 258.6)
-
Step 500
500
#578AD6
oklch(63.2% 0.128 258.2)
-
Step 600
600
#3C72C3
oklch(55.6% 0.139 258.4)
-
Step 700
700
#2E5FA9
oklch(49.1% 0.13 258.6)
-
Step 800
800 (this color)
#2C538E
oklch(44.5% 0.107 258.5)
-
Step 900
900
#24416D
oklch(37.6% 0.084 258.5)
-
Step 950
950
#162640
oklch(26.9% 0.053 259.7)
#2C538E 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) | #385890 | 0.021 |
| Deuteranopia (no green cones) | #294F8D | 0.012 |
| Tritanopia (no blue cones) | #006169 | 0.088 |
| Achromatopsia (no color) | #535353 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C538E
#2C538E
oklch(44.5% 0.107 258.5)
- #6F4C00
#6F4C00
oklch(44.4% 0.092 78.3)
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 #2C538E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.006
- Light Navy Blue #2E5A88 ΔE 0.025
- Light Navy #155084 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.031
- Deep Sea Blue #015482 ΔE 0.034
- Cobalt #1E488F ΔE 0.037
- Twilight #4E518B ΔE 0.042
- Dusk #4E5481 ΔE 0.047
Use #2C538E 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.