#175451
Closest named color: Deep Teal (#00555A). oklch(40.7% 0.061 190.3), rgb(23, 84, 81).
Aa
White text reads best on this color (8.66:1).
About this color
#175451 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.061 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.016 away. White text reads best on it, at 8.66:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.42:1 |
| White text | 8.66:1 |
Values
| HEX | #175451 |
| RGB | rgb(23, 84, 81) |
| HSL | hsl(177, 57%, 21%) |
| OKLCH | oklch(40.7% 0.061 190.3) |
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 #175451 | 8.66:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #175451 | 2.42:1 | Fails | Lc 14.5 | Not readable |
| #175451 text on white | 8.66:1 | AAA | Lc 89.5 | Fine for body text |
| #175451 text on black | 2.42:1 | Fails | Lc -12.8 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A7C8C6
oklch(80.8% 0.035 192)
-
Step 400
400
#77ACA9
oklch(70.7% 0.056 191.5)
-
Step 500
500
#509893
oklch(63.2% 0.073 189.6)
-
Step 600
600
#2F827E
oklch(55.6% 0.079 190.6)
-
Step 700
700
#216E6A
oklch(49.1% 0.073 190.1)
-
Step 800
800 (this color)
#175451
oklch(40.7% 0.061 190.3)
-
Step 900
900
#1F4A47
oklch(37.8% 0.048 189.2)
-
Step 950
950
#132B2A
oklch(26.9% 0.03 192)
#175451 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) | #4F4F51 | 0.065 |
| Deuteranopia (no green cones) | #464952 | 0.060 |
| Tritanopia (no blue cones) | #005653 | 0.010 |
| Achromatopsia (no color) | #4B4B4B | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175451
#175451
oklch(40.7% 0.061 190.3)
- #663B42
#663B42
oklch(40.7% 0.061 9.6)
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 #175451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.016
- Dark Blue Green #005249 ΔE 0.019
- Dark Slate Gray #2F4F4F ΔE 0.024
- Dark Teal #014D4E ΔE 0.027
- Petrol #005F6A ΔE 0.046
- Charcoal #264653 ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.055
Use #175451 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.