#2D4DA4
Closest named color: Cobalt (#1E488F). oklch(44.7% 0.146 265.6), rgb(45, 77, 164).
Aa
White text reads best on this color (7.75:1).
About this color
#2D4DA4 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.146 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.040 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #2D4DA4 |
| RGB | rgb(45, 77, 164) |
| HSL | hsl(224, 57%, 41%) |
| OKLCH | oklch(44.7% 0.146 265.6) |
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 #2D4DA4 | 7.75:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #2D4DA4 | 2.70:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #2D4DA4 text on white | 7.75:1 | AAA | Lc 86.5 | Fine for body text |
| #2D4DA4 text on black | 2.70:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9F9
oklch(88.4% 0.047 265.5)
-
Step 300
300
#A6C0F9
oklch(80.9% 0.086 265.5)
-
Step 400
400
#789DF5
oklch(70.6% 0.136 265.8)
-
Step 500
500
#5682F1
oklch(63.1% 0.173 265.5)
-
Step 600
600
#3D68E0
oklch(55.5% 0.189 265.6)
-
Step 700
700
#3056C3
oklch(49.2% 0.176 265.6)
-
Step 800
800 (this color)
#2D4DA4
oklch(44.7% 0.146 265.6)
-
Step 900
900
#243D7D
oklch(37.8% 0.113 265.3)
-
Step 950
950
#152449
oklch(27% 0.072 265.3)
#2D4DA4 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) | #1258A7 | 0.031 |
| Deuteranopia (no green cones) | #004DA2 | 0.028 |
| Tritanopia (no blue cones) | #006271 | 0.117 |
| Achromatopsia (no color) | #535353 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4DA4
#2D4DA4
oklch(44.7% 0.146 265.6)
- #6B5000
#6B5000
oklch(44.7% 0.092 86.1)
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 #2D4DA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.040
- Dusk Blue #26538D ΔE 0.044
- Blueberry #464196 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.056
- Sapphire #2138AB ΔE 0.056
- Light Navy #155084 ΔE 0.059
- Twilight #4E518B ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.062
Use #2D4DA4 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.