#1971BE
Closest named color: Mid Blue (#276AB3). oklch(54% 0.143 250.6), rgb(25, 113, 190).
Aa
White text reads best on this color (5.06:1).
About this color
#1971BE is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.143 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.023 away. White text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #1971BE |
| RGB | rgb(25, 113, 190) |
| HSL | hsl(208, 77%, 42%) |
| OKLCH | oklch(54% 0.143 250.6) |
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 #1971BE | 5.06:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #1971BE | 4.14:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #1971BE text on white | 5.06:1 | AA | Lc 74.5 | Content text, not long reading |
| #1971BE text on black | 4.14:1 | AA large text | Lc -27.3 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DBF1
oklch(88.4% 0.037 252.1)
-
Step 300
300
#A2C4EA
oklch(80.9% 0.065 251.5)
-
Step 400
400
#6EA5DF
oklch(70.7% 0.103 250.7)
-
Step 500
500
#448DD6
oklch(63% 0.132 250.7)
-
Step 600
600 (this color)
#1971BE
oklch(54% 0.143 250.6)
-
Step 700
700
#1063A9
oklch(49.2% 0.133 250.5)
-
Step 800
800
#135189
oklch(42.8% 0.111 250.7)
-
Step 900
900
#18436D
oklch(37.6% 0.086 250.8)
-
Step 950
950
#102840
oklch(27.1% 0.054 250.5)
#1971BE 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) | #4B76C1 | 0.042 |
| Deuteranopia (no green cones) | #2F68BC | 0.025 |
| Tritanopia (no blue cones) | #00848E | 0.106 |
| Achromatopsia (no color) | #6E6E6E | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1971BE
#1971BE
oklch(54% 0.143 250.6)
- #996100
#996100
oklch(54.1% 0.117 70.6)
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 #1971BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.023
- Windows Blue #3778BF ΔE 0.029
- Nice Blue #107AB0 ΔE 0.037
- French Blue #436BAD ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.042
- Muted Blue #3B719F ΔE 0.052
- Ocean Blue #03719C ΔE 0.056
- Water Blue #0E87CC ΔE 0.062
Use #1971BE 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.