#172D30
Closest named color: Jet (#212529). oklch(28% 0.028 206.8), rgb(23, 45, 48).
Aa
White text reads best on this color (14.43:1).
About this color
#172D30 is a dark close to neutral grey. In OKLCH its lightness is 28%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.029 away. White text reads best on it, at 14.43:1.
| Hue family | Neutrals |
| Lightness | dark (28%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.45:1 |
| White text | 14.43:1 |
Values
| HEX | #172D30 |
| RGB | rgb(23, 45, 48) |
| HSL | hsl(187, 35%, 14%) |
| OKLCH | oklch(28% 0.028 206.8) |
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 #172D30 | 14.43:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #172D30 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #172D30 text on white | 14.43:1 | AAA | Lc 101.1 | Preferred for body text |
| #172D30 text on black | 1.45:1 | 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
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDDF
oklch(88.5% 0.018 205.3)
-
Step 300
300
#A8C7CC
oklch(80.8% 0.034 208.4)
-
Step 400
400
#78ABB2
oklch(70.8% 0.055 206.7)
-
Step 500
500
#53969E
oklch(63.2% 0.069 205.6)
-
Step 600
600
#348089
oklch(55.7% 0.075 206)
-
Step 700
700
#266C75
oklch(49.2% 0.07 207.1)
-
Step 800
800
#21585F
oklch(42.7% 0.058 206.8)
-
Step 900
900
#21484E
oklch(37.6% 0.045 208.6)
-
Step 950
950 (this color)
#172D30
oklch(28% 0.028 206.8)
#172D30 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) | #2A2B30 | 0.028 |
| Deuteranopia (no green cones) | #262830 | 0.027 |
| Tritanopia (no blue cones) | #0B2F2E | 0.014 |
| Achromatopsia (no color) | #2A2A2A | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172D30
#172D30
oklch(28% 0.028 206.8)
- #362421
#362421
oklch(28.1% 0.028 29.6)
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 #172D30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.029
- Dark #1B2431 ΔE 0.033
- Oxford Blue #1B263B ΔE 0.037
- Gunmetal #293241 ΔE 0.044
- Space Cadet #2B2D42 ΔE 0.047
- Midnight Green #073B4C ΔE 0.059
- Pakistan Green #283618 ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.064
Use #172D30 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.