#01487C
Closest named color: Twilight Blue (#0A437A). oklch(39.3% 0.107 248.7), rgb(1, 72, 124).
Aa
White text reads best on this color (9.46:1).
About this color
#01487C is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.107 and its hue 249°. 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 9.46:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.21:1 |
| White text | 9.46:1 |
Values
| HEX | #01487C |
| RGB | rgb(1, 72, 124) |
| HSL | hsl(205, 98%, 25%) |
| OKLCH | oklch(39.3% 0.107 248.7) |
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 #01487C | 9.46:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #01487C | 2.21:1 | Fails | Lc 12.7 | Not readable |
| #01487C text on white | 9.46:1 | AAA | Lc 91.3 | Preferred for body text |
| #01487C text on black | 2.21:1 | Fails | Lc -11.0 | 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
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C3DCF6
oklch(88.4% 0.045 249.4)
-
Step 300
300
#98C6F3
oklch(81% 0.08 248.3)
-
Step 400
400
#5BA6ED
oklch(70.7% 0.129 248.9)
-
Step 500
500
#1A8EE7
oklch(63.2% 0.164 248.5)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900 (this color)
#01487C
oklch(39.3% 0.107 248.7)
-
Step 950
950
#042846
oklch(27% 0.068 248.6)
#01487C 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) | #2E4B7E | 0.035 |
| Deuteranopia (no green cones) | #19417B | 0.022 |
| Tritanopia (no blue cones) | #00555C | 0.077 |
| Achromatopsia (no color) | #464646 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01487C
#01487C
oklch(39.3% 0.107 248.7)
- #633C00
#633C00
oklch(39.4% 0.086 69.2)
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 #01487C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.015
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.037
- Cobalt #1E488F ΔE 0.037
- Dusk Blue #26538D ΔE 0.050
- Marine Blue #01386A ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.068
Use #01487C 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.