#17535B
Closest named color: Deep Teal (#00555A). oklch(40.8% 0.061 207.8), rgb(23, 83, 91).
Aa
White text reads best on this color (8.66:1).
About this color
#17535B is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.061 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.011 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 | #17535B |
| RGB | rgb(23, 83, 91) |
| HSL | hsl(187, 60%, 22%) |
| OKLCH | oklch(40.8% 0.061 207.8) |
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 #17535B | 8.66:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #17535B | 2.42:1 | Fails | Lc 14.5 | Not readable |
| #17535B text on white | 8.66:1 | AAA | Lc 89.5 | Fine for body text |
| #17535B 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C8CD
oklch(81% 0.036 207.7)
-
Step 400
400
#76ABB3
oklch(70.7% 0.057 207.8)
-
Step 500
500
#4F96A0
oklch(63.1% 0.073 207.4)
-
Step 600
600
#2F808B
oklch(55.6% 0.079 207.7)
-
Step 700
700
#206C76
oklch(49% 0.073 207.7)
-
Step 800
800 (this color)
#17535B
oklch(40.8% 0.061 207.8)
-
Step 900
900
#1F494F
oklch(37.8% 0.048 207.8)
-
Step 950
950
#132B2E
oklch(27.1% 0.03 206.1)
#17535B 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) | #4B505C | 0.058 |
| Deuteranopia (no green cones) | #42485B | 0.055 |
| Tritanopia (no blue cones) | #005755 | 0.021 |
| Achromatopsia (no color) | #4B4B4B | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17535B
#17535B
oklch(40.8% 0.061 207.8)
- #673D37
#673D37
oklch(40.9% 0.061 28.7)
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 #17535B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.011
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Teal #014D4E ΔE 0.030
- Dark Blue Green #005249 ΔE 0.034
- Petrol #005F6A ΔE 0.039
- Charcoal #264653 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.057
Use #17535B 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.