#004074
Closest named color: Twilight Blue (#0A437A). oklch(36.7% 0.106 250.7), rgb(0, 64, 116).
Aa
White text reads best on this color (10.57:1).
About this color
#004074 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.106 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.015 away. White text reads best on it, at 10.57:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.98:1 |
| White text | 10.57:1 |
Values
| HEX | #004074 |
| RGB | rgb(0, 64, 116) |
| HSL | hsl(207, 100%, 23%) |
| OKLCH | oklch(36.7% 0.106 250.7) |
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 #004074 | 10.57:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #004074 | 1.98:1 | Fails | Lc 10.0 | Not readable |
| #004074 text on white | 10.57:1 | AAA | Lc 93.9 | Preferred for body text |
| #004074 text on black | 1.98:1 | Fails | Lc -8.6 | 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 900.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF6
oklch(88.5% 0.044 250.4)
-
Step 300
300
#9AC5F3
oklch(80.9% 0.08 250.5)
-
Step 400
400
#60A5ED
oklch(70.7% 0.127 251)
-
Step 500
500
#298CE7
oklch(63% 0.163 250.9)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900 (this color)
#004074
oklch(36.7% 0.106 250.7)
-
Step 950
950
#072746
oklch(26.9% 0.068 251.4)
#004074 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) | #254476 | 0.030 |
| Deuteranopia (no green cones) | #0E3A73 | 0.018 |
| Tritanopia (no blue cones) | #004D54 | 0.078 |
| Achromatopsia (no color) | #3F3F3F | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004074
#004074
oklch(36.7% 0.106 250.7)
- #593600
#593600
oklch(36.7% 0.079 69.9)
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 #004074, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.015
- Marine Blue #01386A ΔE 0.028
- Cobalt #1E488F ΔE 0.055
- Light Navy #155084 ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.059
- Marine #042E60 ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.063
Use #004074 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.