#10479E
Closest named color: Cobalt (#1E488F). oklch(42% 0.152 259.9), rgb(16, 71, 158).
Aa
White text reads best on this color (8.68:1).
About this color
#10479E is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.152 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.026 away. White text reads best on it, at 8.68:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.41:1 |
| White text | 8.68:1 |
Values
| HEX | #10479E |
| RGB | rgb(16, 71, 158) |
| HSL | hsl(217, 82%, 34%) |
| OKLCH | oklch(42% 0.152 259.9) |
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 #10479E | 8.68:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #10479E | 2.41:1 | Fails | Lc 14.8 | Not readable |
| #10479E text on white | 8.68:1 | AAA | Lc 89.2 | Fine for body text |
| #10479E text on black | 2.41:1 | Fails | Lc -13.1 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFB
oklch(88.4% 0.051 260.4)
-
Step 300
300
#9FC2FB
oklch(80.9% 0.09 260)
-
Step 400
400
#6AA0F9
oklch(70.7% 0.143 259.9)
-
Step 500
500
#4185F5
oklch(63.1% 0.182 259.9)
-
Step 600
600
#206BE4
oklch(55.5% 0.198 260)
-
Step 700
700
#1259C6
oklch(49.2% 0.183 259.8)
-
Step 800
800 (this color)
#10479E
oklch(42% 0.152 259.9)
-
Step 900
900
#173E7F
oklch(37.6% 0.119 260.1)
-
Step 950
950
#0E254A
oklch(26.9% 0.075 259.5)
#10479E 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) | #0052A1 | 0.029 |
| Deuteranopia (no green cones) | #00459C | 0.010 |
| Tritanopia (no blue cones) | #005D6B | 0.117 |
| Achromatopsia (no color) | #4B4B4B | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10479E
#10479E
oklch(42% 0.152 259.9)
- #664700
#664700
oklch(42.1% 0.087 80.1)
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 #10479E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.026
- Sapphire #2138AB ΔE 0.041
- Dusk Blue #26538D ΔE 0.050
- Light Navy #155084 ΔE 0.053
- Blueberry #464196 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.063
- Blue Blue #2242C7 ΔE 0.068
Use #10479E 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.