#004DA3
Closest named color: Cobalt (#1E488F). oklch(43.5% 0.154 256.9), rgb(0, 77, 163).
Aa
White text reads best on this color (8.10:1).
About this color
#004DA3 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.154 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.035 away. White text reads best on it, at 8.10:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.59:1 |
| White text | 8.10:1 |
Values
| HEX | #004DA3 |
| RGB | rgb(0, 77, 163) |
| HSL | hsl(212, 100%, 32%) |
| OKLCH | oklch(43.5% 0.154 256.9) |
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 #004DA3 | 8.10:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #004DA3 | 2.59:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #004DA3 text on white | 8.10:1 | AAA | Lc 87.3 | Fine for body text |
| #004DA3 text on black | 2.59:1 | Fails | Lc -14.8 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9BC3FB
oklch(80.9% 0.091 256.9)
-
Step 400
400
#63A2F9
oklch(70.8% 0.144 256.8)
-
Step 500
500
#3387F6
oklch(63.1% 0.184 257)
-
Step 600
600
#006EE3
oklch(55.7% 0.197 256.9)
-
Step 700
700
#005CC0
oklch(49.1% 0.174 256.9)
-
Step 800
800 (this color)
#004DA3
oklch(43.5% 0.154 256.9)
-
Step 900
900
#0D3F7F
oklch(37.6% 0.12 257.1)
-
Step 950
950
#0A264B
oklch(27.1% 0.076 256.8)
#004DA3 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) | #0A57A6 | 0.029 |
| Deuteranopia (no green cones) | #0049A1 | 0.011 |
| Tritanopia (no blue cones) | #006270 | 0.115 |
| Achromatopsia (no color) | #505050 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004DA3
#004DA3
oklch(43.5% 0.154 256.9)
- #6D4900
#6D4900
oklch(43.5% 0.091 76.5)
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 #004DA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.035
- Dusk Blue #26538D ΔE 0.047
- Sapphire #2138AB ΔE 0.052
- Light Navy #155084 ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.061
- Blue Blue #2242C7 ΔE 0.065
- Blueberry #464196 ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.069
Use #004DA3 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.