#2C4EA1
Closest named color: Cobalt (#1E488F). oklch(44.7% 0.14 264.6), rgb(44, 78, 161).
Aa
White text reads best on this color (7.74:1).
About this color
#2C4EA1 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.140 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.037 away. White text reads best on it, at 7.74:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.71:1 |
| White text | 7.74:1 |
Values
| HEX | #2C4EA1 |
| RGB | rgb(44, 78, 161) |
| HSL | hsl(223, 57%, 40%) |
| OKLCH | oklch(44.7% 0.14 264.6) |
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 #2C4EA1 | 7.74:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #2C4EA1 | 2.71:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #2C4EA1 text on white | 7.74:1 | AAA | Lc 86.5 | Fine for body text |
| #2C4EA1 text on black | 2.71:1 | Fails | Lc -15.6 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CAD9F8
oklch(88.4% 0.046 264.9)
-
Step 300
300
#A6C0F7
oklch(80.8% 0.083 264.9)
-
Step 400
400
#779EF2
oklch(70.6% 0.131 264.4)
-
Step 500
500
#5583EE
oklch(63% 0.168 264.6)
-
Step 600
600
#3C6ADC
oklch(55.6% 0.182 264.6)
-
Step 700
700
#2E57BF
oklch(49% 0.17 264.6)
-
Step 800
800 (this color)
#2C4EA1
oklch(44.7% 0.14 264.6)
-
Step 900
900
#243D7B
oklch(37.6% 0.11 265)
-
Step 950
950
#152448
oklch(26.9% 0.07 265)
#2C4EA1 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) | #1B58A4 | 0.028 |
| Deuteranopia (no green cones) | #004D9F | 0.027 |
| Tritanopia (no blue cones) | #006270 | 0.113 |
| Achromatopsia (no color) | #535353 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C4EA1
#2C4EA1
oklch(44.7% 0.14 264.6)
- #6C4F00
#6C4F00
oklch(44.6% 0.092 84.1)
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 #2C4EA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.037
- Dusk Blue #26538D ΔE 0.038
- Blueberry #464196 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.051
- Light Navy #155084 ΔE 0.053
- Twilight #4E518B ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.058
- Sapphire #2138AB ΔE 0.060
Use #2C4EA1 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.