#175259
Closest named color: Deep Teal (#00555A). oklch(40.5% 0.06 206.4), rgb(23, 82, 89).
Aa
White text reads best on this color (8.79:1).
About this color
#175259 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.060 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.012 away. White text reads best on it, at 8.79:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #175259 |
| RGB | rgb(23, 82, 89) |
| HSL | hsl(186, 59%, 22%) |
| OKLCH | oklch(40.5% 0.06 206.4) |
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 #175259 | 8.79:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #175259 | 2.38:1 | Fails | Lc 14.1 | Not readable |
| #175259 text on white | 8.79:1 | AAA | Lc 89.8 | Fine for body text |
| #175259 text on black | 2.38:1 | Fails | Lc -12.4 | 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 800.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A7C7CC
oklch(80.8% 0.035 208)
-
Step 400
400
#77ABB2
oklch(70.7% 0.056 206.5)
-
Step 500
500
#50969F
oklch(63.1% 0.072 206.4)
-
Step 600
600
#30808A
oklch(55.6% 0.078 206.7)
-
Step 700
700
#226C75
oklch(49.1% 0.072 206.7)
-
Step 800
800 (this color)
#175259
oklch(40.5% 0.06 206.4)
-
Step 900
900
#20494E
oklch(37.8% 0.046 206)
-
Step 950
950
#142B2E
oklch(27.2% 0.029 206.4)
#175259 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) | #4B4F59 | 0.058 |
| Deuteranopia (no green cones) | #414759 | 0.054 |
| Tritanopia (no blue cones) | #005654 | 0.020 |
| Achromatopsia (no color) | #4A4A4A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175259
#175259
oklch(40.5% 0.06 206.4)
- #663C38
#663C38
oklch(40.6% 0.06 25.9)
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 #175259, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.012
- Dark Slate Gray #2F4F4F ΔE 0.024
- Dark Teal #014D4E ΔE 0.027
- Dark Blue Green #005249 ΔE 0.031
- Charcoal #264653 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.042
- Petrol #005F6A ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.059
Use #175259 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.