#004D99
Closest named color: Cobalt (#1E488F). oklch(42.7% 0.14 255), rgb(0, 77, 153).
Aa
White text reads best on this color (8.32:1).
About this color
#004D99 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.140 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.022 away. White text reads best on it, at 8.32:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #004D99 |
| RGB | rgb(0, 77, 153) |
| HSL | hsl(210, 100%, 30%) |
| OKLCH | oklch(42.7% 0.14 255) |
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 #004D99 | 8.32:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #004D99 | 2.52:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #004D99 text on white | 8.32:1 | AAA | Lc 88.0 | Fine for body text |
| #004D99 text on black | 2.52:1 | Fails | Lc -14.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9DC4F5
oklch(81% 0.081 254.4)
-
Step 400
400
#65A3F1
oklch(70.7% 0.132 254.9)
-
Step 500
500
#3789EC
oklch(63% 0.169 255.2)
-
Step 600
600
#0171DA
oklch(55.6% 0.182 254.9)
-
Step 700
700
#005EB9
oklch(49% 0.162 255.1)
-
Step 800
800 (this color)
#004D99
oklch(42.7% 0.14 255)
-
Step 900
900
#0F417A
oklch(37.7% 0.11 255)
-
Step 950
950
#0B2747
oklch(27.1% 0.068 254.1)
#004D99 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) | #1E559C | 0.029 |
| Deuteranopia (no green cones) | #004898 | 0.014 |
| Tritanopia (no blue cones) | #00606B | 0.106 |
| Achromatopsia (no color) | #4E4E4E | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004D99
#004D99
oklch(42.7% 0.14 255)
- #6B4600
#6B4600
oklch(42.6% 0.09 74.7)
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 #004D99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.022
- Dusk Blue #26538D ΔE 0.036
- Light Navy #155084 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.056
- Sapphire #2138AB ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.060
- Blueberry #464196 ΔE 0.064
Use #004D99 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.