#215756
Closest named color: Deep Teal (#00555A). oklch(42.1% 0.057 193.5), rgb(33, 87, 86).
Aa
White text reads best on this color (8.19:1).
About this color
#215756 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.057 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.020 away. White text reads best on it, at 8.19:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #215756 |
| RGB | rgb(33, 87, 86) |
| HSL | hsl(179, 45%, 24%) |
| OKLCH | oklch(42.1% 0.057 193.5) |
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 #215756 | 8.19:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #215756 | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #215756 text on white | 8.19:1 | AAA | Lc 88.1 | Fine for body text |
| #215756 text on black | 2.56:1 | Fails | Lc -14.0 | 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 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
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A9C8C7
oklch(81% 0.033 194.1)
-
Step 400
400
#7AABAA
oklch(70.6% 0.052 194.4)
-
Step 500
500
#559795
oklch(63.2% 0.068 193)
-
Step 600
600
#36817F
oklch(55.6% 0.074 192.8)
-
Step 700
700
#286D6C
oklch(49.2% 0.068 193.8)
-
Step 800
800 (this color)
#215756
oklch(42.1% 0.057 193.5)
-
Step 900
900
#224948
oklch(37.7% 0.044 193.2)
-
Step 950
950
#152B2A
oklch(27% 0.028 191.9)
#215756 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) | #525356 | 0.060 |
| Deuteranopia (no green cones) | #494C56 | 0.056 |
| Tritanopia (no blue cones) | #005A57 | 0.017 |
| Achromatopsia (no color) | #4F4F4F | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215756
#215756
oklch(42.1% 0.057 193.5)
- #694044
#694044
oklch(42.1% 0.058 13.5)
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 #215756, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.020
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Blue Green #005249 ΔE 0.033
- Petrol #005F6A ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.039
- Dark Teal #014D4E ΔE 0.041
- Charcoal #264653 ΔE 0.055
- Dark Aqua #05696B ΔE 0.057
Use #215756 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.