#172F33
Closest named color: Jet (#212529). oklch(28.8% 0.031 209.3), rgb(23, 47, 51).
Aa
White text reads best on this color (14.08:1).
About this color
#172F33 is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.031 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.035 away. White text reads best on it, at 14.08:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.49:1 |
| White text | 14.08:1 |
Values
| HEX | #172F33 |
| RGB | rgb(23, 47, 51) |
| HSL | hsl(189, 38%, 15%) |
| OKLCH | oklch(28.8% 0.031 209.3) |
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 #172F33 | 14.08:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #172F33 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #172F33 text on white | 14.08:1 | AAA | Lc 100.7 | Preferred for body text |
| #172F33 text on black | 1.49:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A6C8CD
oklch(81% 0.037 207.3)
-
Step 400
400
#75ABB4
oklch(70.7% 0.058 209)
-
Step 500
500
#4D96A2
oklch(63.1% 0.075 209.4)
-
Step 600
600
#2C808D
oklch(55.6% 0.081 209.6)
-
Step 700
700
#1D6C78
oklch(49.1% 0.075 209.8)
-
Step 800
800
#1B5861
oklch(42.6% 0.062 209)
-
Step 900
900
#1E4950
oklch(37.8% 0.049 209.6)
-
Step 950
950 (this color)
#172F33
oklch(28.8% 0.031 209.3)
#172F33 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) | #2B2D33 | 0.029 |
| Deuteranopia (no green cones) | #272A33 | 0.027 |
| Tritanopia (no blue cones) | #093130 | 0.016 |
| Achromatopsia (no color) | #2B2B2B | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172F33
#172F33
oklch(28.8% 0.031 209.3)
- #392522
#392522
oklch(28.8% 0.031 28.6)
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 #172F33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.035
- Dark #1B2431 ΔE 0.038
- Gunmetal #293241 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.044
- Midnight Green #073B4C ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.057
- Pakistan Green #283618 ΔE 0.061
Use #172F33 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.