#176F9B
Closest named color: Ocean Blue (#03719C). oklch(51.4% 0.104 236.9), rgb(23, 111, 155).
Aa
White text reads best on this color (5.55:1).
About this color
#176F9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.104 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.007 away. White text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.78:1 |
| White text | 5.55:1 |
Values
| HEX | #176F9B |
| RGB | rgb(23, 111, 155) |
| HSL | hsl(200, 74%, 35%) |
| OKLCH | oklch(51.4% 0.104 236.9) |
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 #176F9B | 5.55:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #176F9B | 3.78:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #176F9B text on white | 5.55:1 | AA | Lc 77.3 | Fine for body text |
| #176F9B text on black | 3.78:1 | AA large text | Lc -24.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A3C6DD
oklch(80.9% 0.05 237)
-
Step 400
400
#6EA8CD
oklch(70.6% 0.081 237.5)
-
Step 500
500
#4492C0
oklch(63.1% 0.103 237.4)
-
Step 600
600
#1C7CAC
oklch(55.6% 0.112 236.7)
-
Step 700
700 (this color)
#176F9B
oklch(51.4% 0.104 236.9)
-
Step 800
800
#105578
oklch(42.7% 0.086 237.1)
-
Step 900
900
#174661
oklch(37.6% 0.068 237.9)
-
Step 950
950
#0F2939
oklch(26.9% 0.044 238.4)
#176F9B 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) | #5A6F9D | 0.060 |
| Deuteranopia (no green cones) | #48639A | 0.048 |
| Tritanopia (no blue cones) | #007A7E | 0.066 |
| Achromatopsia (no color) | #686868 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #176F9B
#176F9B
oklch(51.4% 0.104 236.9)
- #935623
#935623
oklch(51.4% 0.103 57.1)
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 #176F9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.007
- Sea Blue #047495 ΔE 0.020
- Peacock Blue #016795 ΔE 0.027
- Muted Blue #3B719F ΔE 0.027
- Flat Blue #3C73A8 ΔE 0.036
- Denim #3B638C ΔE 0.041
- Nice Blue #107AB0 ΔE 0.041
- Ocean #017B92 ΔE 0.043
Use #176F9B 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.