#2A737E
Closest named color: Deep Aqua (#08787F). oklch(51.5% 0.073 209), rgb(42, 115, 126).
Aa
White text reads best on this color (5.45:1).
About this color
#2A737E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.073 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.019 away. White text reads best on it, at 5.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #2A737E |
| RGB | rgb(42, 115, 126) |
| HSL | hsl(188, 50%, 33%) |
| OKLCH | oklch(51.5% 0.073 209) |
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 #2A737E | 5.45:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #2A737E | 3.85:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #2A737E text on white | 5.45:1 | AA | Lc 77.0 | Fine for body text |
| #2A737E text on black | 3.85:1 | AA large text | Lc -24.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C7CD
oklch(80.8% 0.035 210.2)
-
Step 400
400
#77ABB4
oklch(70.8% 0.056 209.4)
-
Step 500
500
#5096A1
oklch(63.2% 0.072 208.7)
-
Step 600
600
#30808C
oklch(55.6% 0.078 208.9)
-
Step 700
700 (this color)
#2A737E
oklch(51.5% 0.073 209)
-
Step 800
800
#1E5861
oklch(42.7% 0.061 209.4)
-
Step 900
900
#1F484F
oklch(37.5% 0.047 210.1)
-
Step 950
950
#142B2E
oklch(27.2% 0.029 206.4)
#2A737E 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) | #696F7F | 0.069 |
| Deuteranopia (no green cones) | #5D667E | 0.063 |
| Tritanopia (no blue cones) | #007876 | 0.028 |
| Achromatopsia (no color) | #696969 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A737E
#2A737E
oklch(51.5% 0.073 209)
- #8D574F
#8D574F
oklch(51.5% 0.073 29)
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 #2A737E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.019
- Deep Turquoise #017374 ΔE 0.025
- Bluegreen #017A79 ΔE 0.029
- Dark Aquamarine #017371 ΔE 0.029
- Ocean #017B92 ΔE 0.034
- Sea Blue #047495 ΔE 0.037
- Teal #008080 ΔE 0.040
- Dark Aqua #05696B ΔE 0.046
Use #2A737E 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.