#17313E
Closest named color: Gunmetal (#293241). oklch(29.9% 0.04 231.9), rgb(23, 49, 62).
Aa
White text reads best on this color (13.58:1).
About this color
#17313E is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.040 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.026 away. White text reads best on it, at 13.58:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.54:1 |
| White text | 13.58:1 |
Values
| HEX | #17313E |
| RGB | rgb(23, 49, 62) |
| HSL | hsl(200, 46%, 17%) |
| OKLCH | oklch(29.9% 0.04 231.9) |
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 #17313E | 13.58:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #17313E | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #17313E text on white | 13.58:1 | AAA | Lc 100.0 | Preferred for body text |
| #17313E text on black | 1.54:1 | 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 950.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DA
oklch(81% 0.047 231.1)
-
Step 400
400
#6FA9C8
oklch(70.6% 0.076 232.7)
-
Step 500
500
#4493BA
oklch(63% 0.097 232.7)
-
Step 600
600
#1C7DA6
oklch(55.6% 0.105 232.2)
-
Step 700
700
#0A698E
oklch(49% 0.097 232.3)
-
Step 800
800
#105673
oklch(42.7% 0.08 231.8)
-
Step 900
900
#18475D
oklch(37.7% 0.063 232.2)
-
Step 950
950 (this color)
#17313E
oklch(29.9% 0.04 231.9)
#17313E 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) | #2B303F | 0.028 |
| Deuteranopia (no green cones) | #252C3E | 0.024 |
| Tritanopia (no blue cones) | #003535 | 0.031 |
| Achromatopsia (no color) | #2E2E2E | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17313E
#17313E
oklch(29.9% 0.04 231.9)
- #3D281B
#3D281B
oklch(29.9% 0.039 52.5)
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 #17313E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.032
- Midnight Green #073B4C ΔE 0.036
- Oxford Blue #1B263B ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.041
- Dark #1B2431 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.046
- Jet #212529 ΔE 0.048
Use #17313E 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.