#10457A
Closest named color: Twilight Blue (#0A437A). oklch(38.7% 0.105 252.6), rgb(16, 69, 122).
Aa
White text reads best on this color (9.74:1).
About this color
#10457A is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.105 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.007 away. White text reads best on it, at 9.74:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.15:1 |
| White text | 9.74:1 |
Values
| HEX | #10457A |
| RGB | rgb(16, 69, 122) |
| HSL | hsl(210, 77%, 27%) |
| OKLCH | oklch(38.7% 0.105 252.6) |
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 #10457A | 9.74:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #10457A | 2.15:1 | Fails | Lc 11.8 | Not readable |
| #10457A text on white | 9.74:1 | AAA | Lc 92.2 | Preferred for body text |
| #10457A text on black | 2.15:1 | Fails | Lc -10.2 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF6
oklch(88.6% 0.044 251.5)
-
Step 300
300
#9DC4F3
oklch(80.9% 0.079 253.4)
-
Step 400
400
#64A4ED
oklch(70.7% 0.126 252.8)
-
Step 500
500
#338BE7
oklch(63% 0.161 252.8)
-
Step 600
600
#0073D2
oklch(55.5% 0.17 252.7)
-
Step 700
700
#0061B2
oklch(49.2% 0.149 252.5)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900 (this color)
#10457A
oklch(38.7% 0.105 252.6)
-
Step 950
950
#0A2746
oklch(27% 0.067 252.9)
#10457A 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) | #2A497C | 0.027 |
| Deuteranopia (no green cones) | #174079 | 0.014 |
| Tritanopia (no blue cones) | #005259 | 0.079 |
| Achromatopsia (no color) | #444444 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10457A
#10457A
oklch(38.7% 0.105 252.6)
- #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 #10457A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.007
- Light Navy #155084 ΔE 0.036
- Cobalt #1E488F ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.045
- Marine Blue #01386A ΔE 0.048
- Dusk Blue #26538D ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.057
- Charcoal #264653 ΔE 0.069
Use #10457A 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.