#2D4C8F
Closest named color: Cobalt (#1E488F). oklch(43% 0.117 263.6), rgb(45, 76, 143).
Aa
White text reads best on this color (8.26:1).
About this color
#2D4C8F is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.117 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.020 away. White text reads best on it, at 8.26:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.54:1 |
| White text | 8.26:1 |
Values
| HEX | #2D4C8F |
| RGB | rgb(45, 76, 143) |
| HSL | hsl(221, 52%, 37%) |
| OKLCH | oklch(43% 0.117 263.6) |
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 #2D4C8F | 8.26:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #2D4C8F | 2.54:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #2D4C8F text on white | 8.26:1 | AAA | Lc 88.3 | Fine for body text |
| #2D4C8F text on black | 2.54:1 | Fails | Lc -13.9 | 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 800.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#AAC1EE
oklch(80.9% 0.069 263.7)
-
Step 400
400
#7DA0E5
oklch(70.8% 0.109 263.3)
-
Step 500
500
#5D86DD
oklch(63% 0.139 263.8)
-
Step 600
600
#436ECB
oklch(55.5% 0.152 263.6)
-
Step 700
700
#355CB0
oklch(49.2% 0.141 263.4)
-
Step 800
800 (this color)
#2D4C8F
oklch(43% 0.117 263.6)
-
Step 900
900
#283F72
oklch(37.7% 0.092 264.2)
-
Step 950
950
#172542
oklch(26.8% 0.058 263.5)
#2D4C8F 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) | #2B5392 | 0.020 |
| Deuteranopia (no green cones) | #184A8E | 0.020 |
| Tritanopia (no blue cones) | #005B66 | 0.095 |
| Achromatopsia (no color) | #4E4E4E | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4C8F
#2D4C8F
oklch(43% 0.117 263.6)
- #674A00
#674A00
oklch(42.9% 0.088 82.7)
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 #2D4C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.020
- Dusk Blue #26538D ΔE 0.021
- Light Navy #155084 ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.042
- Blueberry #464196 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.045
- Twilight #4E518B ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.048
Use #2D4C8F 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.