#17567B
Closest named color: Deep Sea Blue (#015482). oklch(43.3% 0.087 239.7), rgb(23, 86, 123).
Aa
White text reads best on this color (7.91:1).
About this color
#17567B is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.087 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.017 away. White text reads best on it, at 7.91:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #17567B |
| RGB | rgb(23, 86, 123) |
| HSL | hsl(202, 68%, 29%) |
| OKLCH | oklch(43.3% 0.087 239.7) |
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 #17567B | 7.91:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #17567B | 2.65:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #17567B text on white | 7.91:1 | AAA | Lc 87.1 | Fine for body text |
| #17567B text on black | 2.65:1 | Fails | Lc -15.0 | 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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A4C6DE
oklch(81% 0.05 239)
-
Step 400
400
#70A8CE
oklch(70.7% 0.081 239.1)
-
Step 500
500
#4791C2
oklch(63% 0.104 240.3)
-
Step 600
600
#237BAE
oklch(55.6% 0.112 239.6)
-
Step 700
700
#136796
oklch(49.1% 0.106 240.2)
-
Step 800
800 (this color)
#17567B
oklch(43.3% 0.087 239.7)
-
Step 900
900
#1A4662
oklch(37.8% 0.068 240)
-
Step 950
950
#112939
oklch(27% 0.042 240.1)
#17567B 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) | #45567D | 0.046 |
| Deuteranopia (no green cones) | #374D7A | 0.036 |
| Tritanopia (no blue cones) | #005F63 | 0.057 |
| Achromatopsia (no color) | #515151 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17567B
#17567B
oklch(43.3% 0.087 239.7)
- #734317
#734317
oklch(43.2% 0.087 59.1)
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 #17567B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.017
- Light Navy #155084 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.031
- Dusk Blue #26538D ΔE 0.036
- YInMn Blue #415A77 ΔE 0.044
- Petrol #005F6A ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.054
- Cobalt #1E488F ΔE 0.058
Use #17567B 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.