#215657
Closest named color: Deep Teal (#00555A). oklch(41.8% 0.056 196.9), rgb(33, 86, 87).
Aa
White text reads best on this color (8.28:1).
About this color
#215657 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.056 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.018 away. White text reads best on it, at 8.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #215657 |
| RGB | rgb(33, 86, 87) |
| HSL | hsl(181, 45%, 24%) |
| OKLCH | oklch(41.8% 0.056 196.9) |
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 #215657 | 8.28:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #215657 | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #215657 text on white | 8.28:1 | AAA | Lc 88.4 | Fine for body text |
| #215657 text on black | 2.53:1 | Fails | Lc -13.7 | 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
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDD
oklch(88.5% 0.018 196.8)
-
Step 300
300
#A9C8C8
oklch(81% 0.033 196.5)
-
Step 400
400
#7AABAC
oklch(70.7% 0.052 197.6)
-
Step 500
500
#559697
oklch(63% 0.067 196.9)
-
Step 600
600
#378082
oklch(55.5% 0.072 197.7)
-
Step 700
700
#296C6E
oklch(49% 0.067 197.9)
-
Step 800
800 (this color)
#215657
oklch(41.8% 0.056 196.9)
-
Step 900
900
#234949
oklch(37.8% 0.043 195.5)
-
Step 950
950
#152B2B
oklch(27.1% 0.028 195.6)
#215657 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) | #505257 | 0.057 |
| Deuteranopia (no green cones) | #484C57 | 0.053 |
| Tritanopia (no blue cones) | #005956 | 0.018 |
| Achromatopsia (no color) | #4E4E4E | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #215657
#215657
oklch(41.8% 0.056 196.9)
- #684042
#684042
oklch(41.9% 0.056 16.5)
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 #215657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.018
- Dark Slate Gray #2F4F4F ΔE 0.024
- Dark Blue Green #005249 ΔE 0.033
- Petrol #005F6A ΔE 0.036
- Dark Teal #014D4E ΔE 0.038
- Dark Green Blue #1F6357 ΔE 0.043
- Charcoal #264653 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.055
Use #215657 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.