#10506E
Closest named color: Deep Sea Blue (#015482). oklch(40.8% 0.079 234.7), rgb(16, 80, 110).
Aa
White text reads best on this color (8.76:1).
About this color
#10506E is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.079 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.033 away. White text reads best on it, at 8.76:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.39:1 |
| White text | 8.76:1 |
Values
| HEX | #10506E |
| RGB | rgb(16, 80, 110) |
| HSL | hsl(199, 75%, 25%) |
| OKLCH | oklch(40.8% 0.079 234.7) |
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 #10506E | 8.76:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #10506E | 2.39:1 | Fails | Lc 14.3 | Not readable |
| #10506E text on white | 8.76:1 | AAA | Lc 89.7 | Fine for body text |
| #10506E text on black | 2.39:1 | Fails | Lc -12.6 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#72A8C8
oklch(70.6% 0.074 235.3)
-
Step 500
500
#4992BA
oklch(63% 0.095 235)
-
Step 600
600
#267CA6
oklch(55.5% 0.102 234.6)
-
Step 700
700
#17698E
oklch(49.2% 0.094 233.8)
-
Step 800
800 (this color)
#10506E
oklch(40.8% 0.079 234.7)
-
Step 900
900
#1B475D
oklch(37.8% 0.061 233.4)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#10506E 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) | #414F6F | 0.047 |
| Deuteranopia (no green cones) | #35476E | 0.040 |
| Tritanopia (no blue cones) | #00585A | 0.049 |
| Achromatopsia (no color) | #4B4B4B | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10506E
#10506E
oklch(40.8% 0.079 234.7)
- #6A3D1C
#6A3D1C
oklch(40.8% 0.078 54.6)
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 #10506E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.033
- Light Navy #155084 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.040
- Deep Teal #00555A ΔE 0.043
- Charcoal #264653 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.050
- Petrol #005F6A ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.055
Use #10506E 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.