#12757C
Closest named color: Deep Aqua (#08787F). oklch(51.4% 0.083 202.5), rgb(18, 117, 124).
Aa
White text reads best on this color (5.43:1).
About this color
#12757C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.083 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.009 away. White text reads best on it, at 5.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #12757C |
| RGB | rgb(18, 117, 124) |
| HSL | hsl(184, 75%, 28%) |
| OKLCH | oklch(51.4% 0.083 202.5) |
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 #12757C | 5.43:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #12757C | 3.86:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #12757C text on white | 5.43:1 | AA | Lc 76.7 | Fine for body text |
| #12757C text on black | 3.86:1 | AA large text | Lc -25.0 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEDF
oklch(88.5% 0.022 200.2)
-
Step 300
300
#A3C9CC
oklch(80.9% 0.041 202.3)
-
Step 400
400
#6FADB2
oklch(70.7% 0.064 202.3)
-
Step 500
500
#42989F
oklch(63% 0.083 202.6)
-
Step 600
600
#17828A
oklch(55.5% 0.089 202.9)
-
Step 700
700 (this color)
#12757C
oklch(51.4% 0.083 202.5)
-
Step 800
800
#0C5A5F
oklch(42.7% 0.069 201.8)
-
Step 900
900
#164A4E
oklch(37.7% 0.054 202.4)
-
Step 950
950
#0F2B2E
oklch(26.9% 0.034 204.8)
#12757C 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) | #6B707D | 0.083 |
| Deuteranopia (no green cones) | #5D657C | 0.077 |
| Tritanopia (no blue cones) | #007A77 | 0.020 |
| Achromatopsia (no color) | #6A6A6A | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12757C
#12757C
oklch(51.4% 0.083 202.5)
- #915351
#915351
oklch(51.4% 0.083 22.3)
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 #12757C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.009
- Deep Turquoise #017374 ΔE 0.015
- Bluegreen #017A79 ΔE 0.018
- Dark Aquamarine #017371 ΔE 0.019
- Teal #008080 ΔE 0.033
- Ocean #017B92 ΔE 0.035
- Sea Blue #047495 ΔE 0.042
- Dark Aqua #05696B ΔE 0.042
Use #12757C 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.