#2787DD
Closest named color: Water Blue (#0E87CC). oklch(61.2% 0.156 250.4), rgb(39, 135, 221).
Aa
Black text reads best on this color (5.59:1).
About this color
#2787DD is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.156 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.029 away. Black text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #2787DD |
| RGB | rgb(39, 135, 221) |
| HSL | hsl(208, 73%, 51%) |
| OKLCH | oklch(61.2% 0.156 250.4) |
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 #2787DD | 3.75:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #2787DD | 5.59:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #2787DD text on white | 3.75:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #2787DD text on black | 5.59:1 | AA | Lc -37.1 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9CC5F1
oklch(81% 0.076 250.6)
-
Step 400
400
#62A5EA
oklch(70.6% 0.123 250.6)
-
Step 500
500 (this color)
#2787DD
oklch(61.2% 0.156 250.4)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
Step 700
700
#0062AC
oklch(49% 0.141 250.5)
-
Step 800
800
#00508E
oklch(42.6% 0.122 250.5)
-
Step 900
900
#084375
oklch(37.7% 0.102 250.5)
-
Step 950
950
#092844
oklch(27.1% 0.063 249.6)
#2787DD 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) | #5D8DE0 | 0.048 |
| Deuteranopia (no green cones) | #407CDB | 0.030 |
| Tritanopia (no blue cones) | #009CA7 | 0.115 |
| Achromatopsia (no color) | #848484 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2787DD
#2787DD
oklch(61.2% 0.156 250.4)
- #B57300
#B57300
oklch(61.1% 0.132 70.1)
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 #2787DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.031
- Chefchaouen Blue #4895EF ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.053
- Windows Blue #3778BF ΔE 0.055
- Soft Blue #6488EA ΔE 0.056
- Cool Blue #4984B8 ΔE 0.058
- Clear Blue #247AFD ΔE 0.063
Use #2787DD 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.