#247A7A
Closest named color: Bluegreen (#017A79). oklch(53% 0.079 195), rgb(36, 122, 122).
Aa
White text reads best on this color (5.07:1).
About this color
#247A7A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.079 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.012 away. White text reads best on it, at 5.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #247A7A |
| RGB | rgb(36, 122, 122) |
| HSL | hsl(180, 54%, 31%) |
| OKLCH | oklch(53% 0.079 195) |
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 #247A7A | 5.07:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #247A7A | 4.13:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #247A7A text on white | 5.07:1 | AA | Lc 74.7 | Content text, not long reading |
| #247A7A text on black | 4.13:1 | AA large text | Lc -27.0 | 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 600.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CBDDDD
oklch(88.4% 0.019 196.8)
-
Step 300
300
#A7C8C8
oklch(80.9% 0.035 196.5)
-
Step 400
400
#76ACAC
oklch(70.7% 0.057 195.9)
-
Step 500
500
#4F9797
oklch(63% 0.072 195.5)
-
Step 600
600 (this color)
#247A7A
oklch(53% 0.079 195)
-
Step 700
700
#1F6E6E
oklch(49.2% 0.074 195)
-
Step 800
800
#1D5959
oklch(42.6% 0.06 195.1)
-
Step 900
900
#1F4949
oklch(37.6% 0.047 195.3)
-
Step 950
950
#132B2B
oklch(27% 0.03 195.5)
#247A7A 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) | #72747A | 0.083 |
| Deuteranopia (no green cones) | #656A7B | 0.078 |
| Tritanopia (no blue cones) | #007E7A | 0.015 |
| Achromatopsia (no color) | #6E6E6E | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #247A7A
#247A7A
oklch(53% 0.079 195)
- #94585D
#94585D
oklch(53% 0.08 14.8)
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 #247A7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.012
- Deep Aqua #08787F ΔE 0.015
- Teal #008080 ΔE 0.019
- Deep Turquoise #017374 ΔE 0.028
- Dark Aquamarine #017371 ΔE 0.029
- Ocean #017B92 ΔE 0.038
- Dark Cyan #008B8B ΔE 0.050
- Sea Blue #047495 ΔE 0.053
Use #247A7A 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.