#12756B
Closest named color: Dark Aquamarine (#017371). oklch(50.8% 0.085 184.2), rgb(18, 117, 107).
Aa
White text reads best on this color (5.55:1).
About this color
#12756B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.085 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.014 away. White text reads best on it, at 5.55:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.78:1 |
| White text | 5.55:1 |
Values
| HEX | #12756B |
| RGB | rgb(18, 117, 107) |
| HSL | hsl(174, 73%, 26%) |
| OKLCH | oklch(50.8% 0.085 184.2) |
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 #12756B | 5.55:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #12756B | 3.78:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #12756B text on white | 5.55:1 | AA | Lc 77.3 | Fine for body text |
| #12756B text on black | 3.78:1 | AA large text | Lc -24.4 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2EDEB
oklch(93.7% 0.012 184.1)
-
Step 200
200
#C9DEDB
oklch(88.4% 0.023 186.4)
-
Step 300
300
#A4CAC4
oklch(81% 0.041 184.7)
-
Step 400
400
#70AEA5
oklch(70.6% 0.066 184.3)
-
Step 500
500
#449A8F
oklch(63% 0.085 184.1)
-
Step 600
600
#1B8579
oklch(55.7% 0.092 183.3)
-
Step 700
700 (this color)
#12756B
oklch(50.8% 0.085 184.2)
-
Step 800
800
#0F5B53
oklch(42.6% 0.07 184.1)
-
Step 900
900
#184B45
oklch(37.7% 0.055 184.4)
-
Step 950
950
#102C28
oklch(27% 0.035 183.1)
#12756B 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) | #6F6E6B | 0.091 |
| Deuteranopia (no green cones) | #62646C | 0.087 |
| Tritanopia (no blue cones) | #007872 | 0.012 |
| Achromatopsia (no color) | #686868 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12756B
#12756B
oklch(50.8% 0.085 184.2)
- #8E505F
#8E505F
oklch(50.8% 0.085 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 #12756B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.014
- Deep Turquoise #017374 ΔE 0.018
- Bluegreen #017A79 ΔE 0.023
- Deep Aqua #08787F ΔE 0.031
- Dark Aqua #05696B ΔE 0.040
- Teal #008080 ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.056
- Ocean #017B92 ΔE 0.060
Use #12756B 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.