#04456A
Closest named color: Twilight Blue (#0A437A). oklch(37.4% 0.086 241.9), rgb(4, 69, 106).
Aa
White text reads best on this color (10.17:1).
About this color
#04456A is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.086 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.030 away. White text reads best on it, at 10.17:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.06:1 |
| White text | 10.17:1 |
Values
| HEX | #04456A |
| RGB | rgb(4, 69, 106) |
| HSL | hsl(202, 93%, 22%) |
| OKLCH | oklch(37.4% 0.086 241.9) |
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 #04456A | 10.17:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #04456A | 2.06:1 | Fails | Lc 10.8 | Not readable |
| #04456A text on white | 10.17:1 | AAA | Lc 93.1 | Preferred for body text |
| #04456A text on black | 2.06:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C5DDEF
oklch(88.5% 0.036 240.3)
-
Step 300
300
#9CC6E7
oklch(80.8% 0.065 242.2)
-
Step 400
400
#62A8DB
oklch(70.6% 0.103 241.8)
-
Step 500
500
#2C91D2
oklch(63% 0.133 242.2)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900 (this color)
#04456A
oklch(37.4% 0.086 241.9)
-
Step 950
950
#08293F
oklch(27% 0.055 242.5)
#04456A 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) | #33466C | 0.040 |
| Deuteranopia (no green cones) | #253D69 | 0.031 |
| Tritanopia (no blue cones) | #004E52 | 0.058 |
| Achromatopsia (no color) | #414141 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04456A
#04456A
oklch(37.4% 0.086 241.9)
- #603400
#603400
oklch(37.3% 0.086 61.8)
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 #04456A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.037
- Marine Blue #01386A ΔE 0.042
- Charcoal #264653 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.053
- Light Navy #155084 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.056
Use #04456A 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.