#2D789A
Closest named color: Cerulean (#457B9D). oklch(54.2% 0.09 231.5), rgb(45, 120, 154).
Aa
White text reads best on this color (4.92:1).
About this color
#2D789A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.090 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.024 away. White text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #2D789A |
| RGB | rgb(45, 120, 154) |
| HSL | hsl(199, 55%, 39%) |
| OKLCH | oklch(54.2% 0.09 231.5) |
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 #2D789A | 4.92:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #2D789A | 4.26:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #2D789A text on white | 4.92:1 | AA | Lc 73.8 | Content text, not long reading |
| #2D789A text on black | 4.26:1 | AA large text | Lc -27.9 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2EBF0
oklch(93.5% 0.012 231.7)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D6
oklch(80.9% 0.04 230.3)
-
Step 400
400
#77A8C2
oklch(70.6% 0.065 232)
-
Step 500
500
#5192B3
oklch(63% 0.083 232.3)
-
Step 600
600 (this color)
#2D789A
oklch(54.2% 0.09 231.5)
-
Step 700
700
#246988
oklch(49.2% 0.084 231.6)
-
Step 800
800
#20556E
oklch(42.6% 0.069 232.1)
-
Step 900
900
#204759
oklch(37.8% 0.054 230.4)
-
Step 950
950
#142934
oklch(26.9% 0.034 232.8)
#2D789A 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) | #67769C | 0.060 |
| Deuteranopia (no green cones) | #586C9A | 0.051 |
| Tritanopia (no blue cones) | #008183 | 0.055 |
| Achromatopsia (no color) | #707070 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D789A
#2D789A
oklch(54.2% 0.09 231.5)
- #985F3C
#985F3C
oklch(54.1% 0.089 51.4)
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 #2D789A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.024
- Sea Blue #047495 ΔE 0.024
- Ocean #017B92 ΔE 0.025
- Dull Blue #49759C ΔE 0.025
- Muted Blue #3B719F ΔE 0.026
- Ocean Blue #03719C ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
Use #2D789A 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.