#256E84
Closest named color: Sea Blue (#047495). oklch(50.3% 0.078 221.8), rgb(37, 110, 132).
Aa
White text reads best on this color (5.76:1).
About this color
#256E84 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.078 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.029 away. White text reads best on it, at 5.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #256E84 |
| RGB | rgb(37, 110, 132) |
| HSL | hsl(194, 56%, 33%) |
| OKLCH | oklch(50.3% 0.078 221.8) |
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 #256E84 | 5.76:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #256E84 | 3.64:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #256E84 text on white | 5.76:1 | AA | Lc 78.6 | Fine for body text |
| #256E84 text on black | 3.64:1 | AA large text | Lc -23.2 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A7C7D2
oklch(81% 0.038 220.6)
-
Step 400
400
#76AABC
oklch(70.8% 0.061 221.5)
-
Step 500
500
#4F94AB
oklch(63% 0.078 222)
-
Step 600
600
#2F7E96
oklch(55.5% 0.084 221.6)
-
Step 700
700 (this color)
#256E84
oklch(50.3% 0.078 221.8)
-
Step 800
800
#1E5768
oklch(42.7% 0.064 221.2)
-
Step 900
900
#1F4855
oklch(37.8% 0.051 221.4)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#256E84 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) | #616B85 | 0.063 |
| Deuteranopia (no green cones) | #546284 | 0.056 |
| Tritanopia (no blue cones) | #007575 | 0.040 |
| Achromatopsia (no color) | #666666 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256E84
#256E84
oklch(50.3% 0.078 221.8)
- #8A5540
#8A5540
oklch(50.4% 0.078 42.3)
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 #256E84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.029
- Deep Aqua #08787F ΔE 0.035
- Deep Turquoise #017374 ΔE 0.037
- Ocean Blue #03719C ΔE 0.038
- Ocean #017B92 ΔE 0.039
- Denim #3B638C ΔE 0.042
- Dark Aquamarine #017371 ΔE 0.042
- Peacock Blue #016795 ΔE 0.042
Use #256E84 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.