#2F90E5
Closest named color: Dark Sky Blue (#448EE4). oklch(63.9% 0.155 249.4), rgb(47, 144, 229).
Aa
Black text reads best on this color (6.24:1).
About this color
#2F90E5 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.155 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.013 away. Black text reads best on it, at 6.24:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.24:1 |
| White text | 3.36:1 |
Values
| HEX | #2F90E5 |
| RGB | rgb(47, 144, 229) |
| HSL | hsl(208, 78%, 54%) |
| OKLCH | oklch(63.9% 0.155 249.4) |
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 #2F90E5 | 3.36:1 | AA large text | Lc -66.1 | Content text, not long reading |
| Black text on #2F90E5 | 6.24:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #2F90E5 text on white | 3.36:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #2F90E5 text on black | 6.24:1 | AA | Lc -41.1 | 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
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF4
oklch(88.5% 0.041 249.4)
-
Step 300
300
#9BC5F0
oklch(80.9% 0.076 249.4)
-
Step 400
400
#61A6E9
oklch(70.8% 0.121 249.2)
-
Step 500
500 (this color)
#2F90E5
oklch(63.9% 0.155 249.4)
-
Step 600
600
#0076C9
oklch(55.6% 0.155 249.4)
-
Step 700
700
#0063AA
oklch(49.1% 0.137 249.4)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#064374
oklch(37.6% 0.101 249.7)
-
Step 950
950
#082844
oklch(27% 0.064 249)
#2F90E5 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) | #6895E8 | 0.051 |
| Deuteranopia (no green cones) | #4C85E3 | 0.032 |
| Tritanopia (no blue cones) | #00A4AF | 0.113 |
| Achromatopsia (no color) | #8C8C8C | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F90E5
#2F90E5
oklch(63.9% 0.155 249.4)
- #C17A00
#C17A00
oklch(64% 0.139 69.5)
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 #2F90E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.013
- Chefchaouen Blue #4895EF ΔE 0.027
- Dodger Blue #1E90FF ΔE 0.039
- Water Blue #0E87CC ΔE 0.046
- Soft Blue #6488EA ΔE 0.047
- Cornflower Blue #6495ED ΔE 0.049
- Cool Blue #4984B8 ΔE 0.069
- Faded Blue #658CBB ΔE 0.072
Use #2F90E5 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.