#04407F
Closest named color: Twilight Blue (#0A437A). oklch(37.6% 0.12 255.1), rgb(4, 64, 127).
Aa
White text reads best on this color (10.26:1).
About this color
#04407F is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.120 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.014 away. White text reads best on it, at 10.26:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.04:1 |
| White text | 10.26:1 |
Values
| HEX | #04407F |
| RGB | rgb(4, 64, 127) |
| HSL | hsl(211, 94%, 26%) |
| OKLCH | oklch(37.6% 0.12 255.1) |
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 #04407F | 10.26:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #04407F | 2.04:1 | Fails | Lc 10.7 | Not readable |
| #04407F text on white | 10.26:1 | AAA | Lc 93.2 | Preferred for body text |
| #04407F text on black | 2.04:1 | Fails | Lc -9.3 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C3DBFB
oklch(88.4% 0.051 255.7)
-
Step 300
300
#99C4FB
oklch(81% 0.091 254.9)
-
Step 400
400
#5EA3F8
oklch(70.8% 0.144 254.6)
-
Step 500
500
#2988F5
oklch(63% 0.184 255.1)
-
Step 600
600
#0071DB
oklch(55.7% 0.183 255)
-
Step 700
700
#005EB9
oklch(49% 0.162 255.1)
-
Step 800
800
#004D99
oklch(42.7% 0.14 255)
-
Step 900
900 (this color)
#04407F
oklch(37.6% 0.12 255.1)
-
Step 950
950
#07264A
oklch(26.9% 0.076 254.9)
#04407F 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) | #1B4681 | 0.024 |
| Deuteranopia (no green cones) | #003C7E | 0.012 |
| Tritanopia (no blue cones) | #004F59 | 0.089 |
| Achromatopsia (no color) | #414141 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04407F
#04407F
oklch(37.6% 0.12 255.1)
- #5A3A00
#5A3A00
oklch(37.7% 0.08 74.4)
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 #04407F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.014
- Cobalt #1E488F ΔE 0.040
- Marine Blue #01386A ΔE 0.042
- Light Navy #155084 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.060
- Dusk Blue #26538D ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.072
- Marine #042E60 ΔE 0.073
Use #04407F 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.