#21696F
Closest named color: Dark Aqua (#05696B). oklch(48% 0.07 203.1), rgb(33, 105, 111).
Aa
White text reads best on this color (6.33:1).
About this color
#21696F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.070 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.014 away. White text reads best on it, at 6.33:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #21696F |
| RGB | rgb(33, 105, 111) |
| HSL | hsl(185, 54%, 28%) |
| OKLCH | oklch(48% 0.07 203.1) |
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 #21696F | 6.33:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #21696F | 3.31:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #21696F text on white | 6.33:1 | AA | Lc 81.3 | Fine for body text |
| #21696F text on black | 3.31:1 | AA large text | Lc -20.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDDF
oklch(88.5% 0.018 205.3)
-
Step 300
300
#A8C7CA
oklch(80.8% 0.034 203.7)
-
Step 400
400
#78ABB0
oklch(70.7% 0.054 203.7)
-
Step 500
500
#53969C
oklch(63.1% 0.069 203.1)
-
Step 600
600
#348087
oklch(55.6% 0.075 203.6)
-
Step 700
700 (this color)
#21696F
oklch(48% 0.07 203.1)
-
Step 800
800
#21585D
oklch(42.6% 0.058 203.5)
-
Step 900
900
#21494C
oklch(37.8% 0.045 201.9)
-
Step 950
950
#142B2D
oklch(27.1% 0.029 202.9)
#21696F 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) | #61646F | 0.070 |
| Deuteranopia (no green cones) | #555C6F | 0.064 |
| Tritanopia (no blue cones) | #006D6B | 0.019 |
| Achromatopsia (no color) | #606060 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21696F
#21696F
oklch(48% 0.07 203.1)
- #804D4B
#804D4B
oklch(47.8% 0.07 22.4)
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 #21696F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.014
- Deep Turquoise #017374 ΔE 0.030
- Dark Aquamarine #017371 ΔE 0.031
- Petrol #005F6A ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.039
- Deep Aqua #08787F ΔE 0.046
- Slate #516572 ΔE 0.049
- Bluegreen #017A79 ΔE 0.050
Use #21696F 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.