#1970D3
Closest named color: Royal Blue (#4169E1). oklch(55.2% 0.171 255.6), rgb(25, 112, 211).
Aa
White text reads best on this color (4.88:1).
About this color
#1970D3 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.171 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.039 away. White text reads best on it, at 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.29:1 |
| White text | 4.88:1 |
Values
| HEX | #1970D3 |
| RGB | rgb(25, 112, 211) |
| HSL | hsl(212, 79%, 46%) |
| OKLCH | oklch(55.2% 0.171 255.6) |
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 #1970D3 | 4.88:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #1970D3 | 4.29:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #1970D3 text on white | 4.88:1 | AA | Lc 73.2 | Content text, not long reading |
| #1970D3 text on black | 4.29:1 | AA large text | Lc -28.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF6
oklch(88.5% 0.043 255.9)
-
Step 300
300
#A0C3F2
oklch(80.8% 0.077 255.9)
-
Step 400
400
#6BA3EC
oklch(70.7% 0.123 255.5)
-
Step 500
500
#408AE6
oklch(63.2% 0.157 255.4)
-
Step 600
600 (this color)
#1970D3
oklch(55.2% 0.171 255.6)
-
Step 700
700
#0A5EB8
oklch(49% 0.16 255.7)
-
Step 800
800
#0F4D95
oklch(42.6% 0.133 255.9)
-
Step 900
900
#164177
oklch(37.7% 0.104 256)
-
Step 950
950
#0E2745
oklch(27.1% 0.064 254.6)
#1970D3 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) | #377AD7 | 0.035 |
| Deuteranopia (no green cones) | #0069D1 | 0.021 |
| Tritanopia (no blue cones) | #008897 | 0.129 |
| Achromatopsia (no color) | #717171 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1970D3
#1970D3
oklch(55.2% 0.171 255.6)
- #996700
#996700
oklch(55.3% 0.116 75.6)
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 #1970D3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.042
- Windows Blue #3778BF ΔE 0.045
- Mid Blue #276AB3 ΔE 0.050
- Azul #1D5DEC ΔE 0.062
- Neon Blue #4361EE ΔE 0.062
- French Blue #436BAD ΔE 0.063
- Water Blue #0E87CC ΔE 0.066
Use #1970D3 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.