#17403F
Closest named color: Midnight Green (#073B4C). oklch(34.2% 0.045 193), rgb(23, 64, 63).
Aa
White text reads best on this color (11.40:1).
About this color
#17403F is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.045 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.035 away. White text reads best on it, at 11.40:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.84:1 |
| White text | 11.40:1 |
Values
| HEX | #17403F |
| RGB | rgb(23, 64, 63) |
| HSL | hsl(179, 47%, 17%) |
| OKLCH | oklch(34.2% 0.045 193) |
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 #17403F | 11.40:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #17403F | 1.84:1 | Fails | Lc 7.8 | Not readable |
| #17403F text on white | 11.40:1 | AAA | Lc 96.1 | Preferred for body text |
| #17403F text on black | 1.84:1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A8C8C7
oklch(80.9% 0.034 194.2)
-
Step 400
400
#78ACAA
oklch(70.7% 0.055 193)
-
Step 500
500
#539795
oklch(63.1% 0.069 193.1)
-
Step 600
600
#33817F
oklch(55.5% 0.076 192.9)
-
Step 700
700
#256D6C
oklch(49.1% 0.07 193.8)
-
Step 800
800
#215958
oklch(42.7% 0.058 193.6)
-
Step 900
900 (this color)
#17403F
oklch(34.2% 0.045 193)
-
Step 950
950
#142B2A
oklch(27% 0.029 191.9)
#17403F 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) | #3C3D3F | 0.048 |
| Deuteranopia (no green cones) | #35383F | 0.044 |
| Tritanopia (no blue cones) | #004240 | 0.013 |
| Achromatopsia (no color) | #3A3A3A | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17403F
#17403F
oklch(34.2% 0.045 193)
- #4D2F32
#4D2F32
oklch(34.3% 0.044 13.1)
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 #17403F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.036
- Onyx #343A40 ΔE 0.040
- Charcoal #264653 ΔE 0.042
- Dark Teal #014D4E ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.048
- Evergreen #05472A ΔE 0.051
- Gunmetal #293241 ΔE 0.051
Use #17403F 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.