#17384B
Closest named color: Midnight Green (#073B4C). oklch(32.5% 0.051 236.6), rgb(23, 56, 75).
Aa
White text reads best on this color (12.32:1).
About this color
#17384B is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.051 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.013 away. White text reads best on it, at 12.32:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.70:1 |
| White text | 12.32:1 |
Values
| HEX | #17384B |
| RGB | rgb(23, 56, 75) |
| HSL | hsl(202, 53%, 19%) |
| OKLCH | oklch(32.5% 0.051 236.6) |
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 #17384B | 12.32:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #17384B | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #17384B text on white | 12.32:1 | AAA | Lc 97.9 | Preferred for body text |
| #17384B text on black | 1.70:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE6
oklch(88.6% 0.021 236.8)
-
Step 300
300
#AAC5D7
oklch(80.9% 0.039 237.2)
-
Step 400
400
#7CA7C2
oklch(70.7% 0.061 236.3)
-
Step 500
500
#5991B3
oklch(63.1% 0.078 236.5)
-
Step 600
600
#3C7B9F
oklch(55.7% 0.086 236.2)
-
Step 700
700
#2E6788
oklch(49.1% 0.08 236.9)
-
Step 800
800
#27546E
oklch(42.6% 0.066 236.5)
-
Step 900
900 (this color)
#17384B
oklch(32.5% 0.051 236.6)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#17384B 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) | #2F384C | 0.030 |
| Deuteranopia (no green cones) | #28324B | 0.027 |
| Tritanopia (no blue cones) | #003D3E | 0.037 |
| Achromatopsia (no color) | #353535 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17384B
#17384B
oklch(32.5% 0.051 236.6)
- #482D19
#482D19
oklch(32.5% 0.051 56.3)
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 #17384B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.013
- Dark Blue Grey #1F3B4D ΔE 0.014
- Prussian Blue #1D3557 ΔE 0.027
- Gunmetal #293241 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.041
- Onyx #343A40 ΔE 0.043
- Charcoal #264653 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.056
Use #17384B 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.