#1970E9
Closest named color: Cerulean Blue (#056EEE). oklch(56.8% 0.2 258.6), rgb(25, 112, 233).
Aa
White text reads best on this color (4.62:1).
About this color
#1970E9 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.200 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.011 away. White text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.200) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.53:1 |
| White text | 4.62:1 |
Values
| HEX | #1970E9 |
| RGB | rgb(25, 112, 233) |
| HSL | hsl(215, 83%, 51%) |
| OKLCH | oklch(56.8% 0.2 258.6) |
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 #1970E9 | 4.62:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #1970E9 | 4.53:1 | AA | Lc 32.6 | Non-text elements, placeholder text |
| #1970E9 text on white | 4.62:1 | AA | Lc 71.4 | Content text, not long reading |
| #1970E9 text on black | 4.53:1 | AA | Lc -30.2 | 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 600.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFB
oklch(88.6% 0.05 258.7)
-
Step 300
300
#9DC2FB
oklch(80.8% 0.091 258.9)
-
Step 400
400
#67A1F9
oklch(70.8% 0.143 258.5)
-
Step 500
500
#3B86F6
oklch(63.1% 0.183 258.6)
-
Step 600
600 (this color)
#1970E9
oklch(56.8% 0.2 258.6)
-
Step 700
700
#0259C7
oklch(49% 0.186 258.7)
-
Step 800
800
#0A4AA1
oklch(42.8% 0.154 258.6)
-
Step 900
900
#133F80
oklch(37.8% 0.12 258.7)
-
Step 950
950
#0D254B
oklch(27% 0.077 259.3)
#1970E9 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) | #107EED | 0.035 |
| Deuteranopia (no green cones) | #006CE7 | 0.014 |
| Tritanopia (no blue cones) | #008EA2 | 0.151 |
| Achromatopsia (no color) | #757575 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1970E9
#1970E9
oklch(56.8% 0.2 258.6)
- #9C6D00
#9C6D00
oklch(56.9% 0.118 78.8)
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 #1970E9, closest first.
No curated palette has a color within ΔE 0.04 of #1970E9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.011
- Royal Blue #4169E1 ΔE 0.030
- Clear Blue #247AFD ΔE 0.039
- Bright Blue #0165FC ΔE 0.041
- Neon Blue #4361EE ΔE 0.042
- Azul #1D5DEC ΔE 0.046
- Warm Blue #4B57DB ΔE 0.066
- Windows Blue #3778BF ΔE 0.073
Use #1970E9 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.