#12A3D3
Closest named color: Turquoise Blue (#06B1C4). oklch(66.9% 0.128 228.5), rgb(18, 163, 211).
Aa
Black text reads best on this color (7.20:1).
About this color
#12A3D3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.128 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.052 away. Black text reads best on it, at 7.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.20:1 |
| White text | 2.91:1 |
Values
| HEX | #12A3D3 |
| RGB | rgb(18, 163, 211) |
| HSL | hsl(195, 84%, 45%) |
| OKLCH | oklch(66.9% 0.128 228.5) |
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 #12A3D3 | 2.91:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #12A3D3 | 7.20:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #12A3D3 text on white | 2.91:1 | Fails | Lc 55.0 | Large or bold text, headings |
| #12A3D3 text on black | 7.20:1 | AAA | Lc -46.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#DBEDF6
oklch(93.5% 0.023 229.1)
-
Step 200
200
#BCE0F1
oklch(88.6% 0.044 228.1)
-
Step 300
300
#88CBEA
oklch(80.8% 0.081 228.8)
-
Step 400
400 (this color)
#12A3D3
oklch(66.9% 0.128 228.5)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA6
oklch(55.7% 0.109 228.5)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004860
oklch(37.5% 0.074 228.7)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#12A3D3 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) | #8AA0D5 | 0.091 |
| Deuteranopia (no green cones) | #7290D2 | 0.077 |
| Tritanopia (no blue cones) | #00B0B3 | 0.070 |
| Achromatopsia (no color) | #979797 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12A3D3
#12A3D3
oklch(66.9% 0.128 228.5)
- #D47B49
#D47B49
oklch(67.1% 0.129 48.7)
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 #12A3D3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.068
- Dark Sky Blue #448EE4 ΔE 0.070
- Faded Blue #658CBB ΔE 0.074
- Greyblue #77A1B5 ΔE 0.076
- Cornflower Blue #6495ED ΔE 0.077
- Blue NCS #118AB2 ΔE 0.079
- Water Blue #0E87CC ΔE 0.079
Use #12A3D3 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.