#02457F
Closest named color: Twilight Blue (#0A437A). oklch(38.8% 0.115 252), rgb(2, 69, 127).
Aa
White text reads best on this color (9.72:1).
About this color
#02457F is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.115 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.010 away. White text reads best on it, at 9.72:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.16:1 |
| White text | 9.72:1 |
Values
| HEX | #02457F |
| RGB | rgb(2, 69, 127) |
| HSL | hsl(208, 97%, 25%) |
| OKLCH | oklch(38.8% 0.115 252) |
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 #02457F | 9.72:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #02457F | 2.16:1 | Fails | Lc 12.0 | Not readable |
| #02457F text on white | 9.72:1 | AAA | Lc 91.9 | Preferred for body text |
| #02457F text on black | 2.16:1 | Fails | Lc -10.5 | 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
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCF9
oklch(88.5% 0.048 252.2)
-
Step 300
300
#98C5F7
oklch(81% 0.086 251.5)
-
Step 400
400
#5CA4F3
oklch(70.6% 0.137 252.3)
-
Step 500
500
#1F8BEF
oklch(63.1% 0.176 252)
-
Step 600
600
#0074D0
oklch(55.6% 0.166 251.9)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900 (this color)
#02457F
oklch(38.8% 0.115 252)
-
Step 950
950
#052748
oklch(27% 0.072 251.7)
#02457F 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) | #264A81 | 0.030 |
| Deuteranopia (no green cones) | #0A3F7E | 0.017 |
| Tritanopia (no blue cones) | #00535B | 0.084 |
| Achromatopsia (no color) | #444444 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02457F
#02457F
oklch(38.8% 0.115 252)
- #5F3C00
#5F3C00
oklch(38.8% 0.083 72.6)
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 #02457F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.010
- Cobalt #1E488F ΔE 0.034
- Light Navy #155084 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.045
- Marine Blue #01386A ΔE 0.050
- Dusk Blue #26538D ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.066
- Light Navy Blue #2E5A88 ΔE 0.075
Use #02457F 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.