#42ABCD
Closest named color: Turquoise Blue (#06B1C4). oklch(69.5% 0.107 223.1), rgb(66, 171, 205).
Aa
Black text reads best on this color (7.93:1).
About this color
#42ABCD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.107 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.031 away. Black text reads best on it, at 7.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.93:1 |
| White text | 2.64:1 |
Values
| HEX | #42ABCD |
| RGB | rgb(66, 171, 205) |
| HSL | hsl(195, 58%, 53%) |
| OKLCH | oklch(69.5% 0.107 223.1) |
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 #42ABCD | 2.64:1 | Fails | Lc -56.4 | Large or bold text, headings |
| Black text on #42ABCD | 7.93:1 | AAA | Lc 52.8 | Large or bold text, headings |
| #42ABCD text on white | 2.64:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #42ABCD text on black | 7.93:1 | AAA | Lc -50.7 | 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
#EFF7FA
oklch(97.1% 0.009 222.1)
-
Step 100
100
#DDEDF3
oklch(93.6% 0.019 222.2)
-
Step 200
200
#C0DFEB
oklch(88.5% 0.037 223.2)
-
Step 300
300
#91CBE0
oklch(81% 0.066 222.4)
-
Step 400
400 (this color)
#42ABCD
oklch(69.5% 0.107 223.1)
-
Step 500
500
#0098BD
oklch(63.1% 0.118 223.1)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#00495D
oklch(37.7% 0.071 223.8)
-
Step 950
950
#002B38
oklch(26.8% 0.05 223.6)
#42ABCD 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) | #98A7CF | 0.086 |
| Deuteranopia (no green cones) | #8499CD | 0.075 |
| Tritanopia (no blue cones) | #00B5B6 | 0.056 |
| Achromatopsia (no color) | #9F9F9F | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42ABCD
#42ABCD
oklch(69.5% 0.107 223.1)
- #D48666
#D48666
oklch(69.4% 0.106 42.9)
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 #42ABCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.031
- Greyblue #77A1B5 ΔE 0.054
- Light Sea Green #20B2AA ΔE 0.065
- Cadet Blue #5F9EA0 ΔE 0.066
- Bluegrey #85A3B2 ΔE 0.067
- Bluey Grey #89A0B0 ΔE 0.074
- Topaz #13BBAF ΔE 0.076
- Deep Sky Blue #00BFFF ΔE 0.079
Use #42ABCD 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.