#17396C
Closest named color: Marine Blue (#01386A). oklch(35% 0.097 258.5), rgb(23, 57, 108).
Aa
White text reads best on this color (11.42:1).
About this color
#17396C is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.097 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.015 away. White text reads best on it, at 11.42:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.83:1 |
| White text | 11.42:1 |
Values
| HEX | #17396C |
| RGB | rgb(23, 57, 108) |
| HSL | hsl(216, 65%, 26%) |
| OKLCH | oklch(35% 0.097 258.5) |
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 #17396C | 11.42:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #17396C | 1.83:1 | Fails | Lc 7.9 | Not readable |
| #17396C text on white | 11.42:1 | AAA | Lc 96.0 | Preferred for body text |
| #17396C text on black | 1.83:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DAF4
oklch(88.4% 0.04 258.8)
-
Step 300
300
#A4C2F0
oklch(80.8% 0.073 258.8)
-
Step 400
400
#73A2E9
oklch(70.8% 0.116 258.4)
-
Step 500
500
#4D88E2
oklch(63% 0.15 258.6)
-
Step 600
600
#3070D0
oklch(55.6% 0.162 258.6)
-
Step 700
700
#225DB4
oklch(49% 0.151 258.6)
-
Step 800
800
#1E4D92
oklch(42.8% 0.125 258.4)
-
Step 900
900 (this color)
#17396C
oklch(35% 0.097 258.5)
-
Step 950
950
#122644
oklch(26.9% 0.062 258.3)
#17396C 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) | #1F3E6E | 0.018 |
| Deuteranopia (no green cones) | #0D366B | 0.013 |
| Tritanopia (no blue cones) | #00454D | 0.076 |
| Achromatopsia (no color) | #3A3A3A | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17396C
#17396C
oklch(35% 0.097 258.5)
- #4F3500
#4F3500
oklch(35% 0.073 78.4)
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 #17396C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.015
- Twilight Blue #0A437A ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.037
- Marine #042E60 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.060
- Midnight Green #073B4C ΔE 0.061
- Charcoal #264653 ΔE 0.070
Use #17396C 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.