#23666A
Closest named color: Dark Aqua (#05696B). oklch(47% 0.066 200.7), rgb(35, 102, 106).
Aa
White text reads best on this color (6.60:1).
About this color
#23666A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.066 and its hue 201°. 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 6.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.18:1 |
| White text | 6.60:1 |
Values
| HEX | #23666A |
| RGB | rgb(35, 102, 106) |
| HSL | hsl(183, 50%, 28%) |
| OKLCH | oklch(47% 0.066 200.7) |
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 #23666A | 6.60:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #23666A | 3.18:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #23666A text on white | 6.60:1 | AA | Lc 82.4 | Fine for body text |
| #23666A text on black | 3.18:1 | AA large text | Lc -19.5 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDE
oklch(88.5% 0.018 201.1)
-
Step 300
300
#AAC7C9
oklch(80.9% 0.031 201.7)
-
Step 400
400
#7BABAE
oklch(70.8% 0.051 200.9)
-
Step 500
500
#56969A
oklch(63.2% 0.066 200.8)
-
Step 600
600
#388084
oklch(55.6% 0.072 200.3)
-
Step 700
700 (this color)
#23666A
oklch(47% 0.066 200.7)
-
Step 800
800
#24585B
oklch(42.7% 0.055 200.5)
-
Step 900
900
#23484B
oklch(37.6% 0.043 202.4)
-
Step 950
950
#152A2C
oklch(26.8% 0.027 203.5)
#23666A 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) | #5E616A | 0.067 |
| Deuteranopia (no green cones) | #54596A | 0.063 |
| Tritanopia (no blue cones) | #006A67 | 0.020 |
| Achromatopsia (no color) | #5D5D5D | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23666A
#23666A
oklch(47% 0.066 200.7)
- #7C4C4B
#7C4C4B
oklch(47.1% 0.066 21.1)
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 #23666A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.014
- Petrol #005F6A ΔE 0.030
- Dark Green Blue #1F6357 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.039
- Slate #516572 ΔE 0.051
- YInMn Blue #415A77 ΔE 0.055
- Deep Aqua #08787F ΔE 0.056
Use #23666A 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.