#2C438F
Closest named color: Cobalt (#1E488F). oklch(40.9% 0.129 267.7), rgb(44, 67, 143).
Aa
White text reads best on this color (9.10:1).
About this color
#2C438F is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.129 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.017 away. White text reads best on it, at 9.10:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #2C438F |
| RGB | rgb(44, 67, 143) |
| HSL | hsl(226, 53%, 37%) |
| OKLCH | oklch(40.9% 0.129 267.7) |
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 #2C438F | 9.10:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #2C438F | 2.30:1 | Fails | Lc 13.4 | Not readable |
| #2C438F text on white | 9.10:1 | AAA | Lc 90.6 | Preferred for body text |
| #2C438F text on black | 2.30:1 | Fails | Lc -11.7 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ABC0F2
oklch(80.9% 0.075 267)
-
Step 400
400
#809DEC
oklch(70.7% 0.121 267.9)
-
Step 500
500
#6183E6
oklch(63.2% 0.154 267.6)
-
Step 600
600
#496AD4
oklch(55.6% 0.167 267.7)
-
Step 700
700
#3B58B8
oklch(49.2% 0.155 267.7)
-
Step 800
800 (this color)
#2C438F
oklch(40.9% 0.129 267.7)
-
Step 900
900
#2A3D76
oklch(37.6% 0.1 267.6)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#2C438F 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) | #134D92 | 0.031 |
| Deuteranopia (no green cones) | #00448D | 0.031 |
| Tritanopia (no blue cones) | #005562 | 0.106 |
| Achromatopsia (no color) | #484848 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C438F
#2C438F
oklch(40.9% 0.129 267.7)
- #5D4700
#5D4700
oklch(41% 0.084 88.3)
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 #2C438F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.017
- Blueberry #464196 ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.041
- Dusk Blue #26538D ΔE 0.045
- Light Navy #155084 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.046
- Sapphire #2138AB ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.060
Use #2C438F 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.